{"id":271995,"date":"2026-05-26T20:40:00","date_gmt":"2026-05-26T12:40:00","guid":{"rendered":"http:\/\/www.cailiaoniu.com\/?p=271995"},"modified":"2026-05-25T16:58:28","modified_gmt":"2026-05-25T08:58:28","slug":"%e9%a6%99%e6%b8%af%e5%9f%8e%e5%b8%82%e5%a4%a7%e5%ad%a6%e5%bd%ad%e5%92%8f%e5%ba%b7%e8%af%be%e9%a2%98%e7%bb%84%ef%bc%9a%e4%b8%80%e6%ad%a5%e6%b3%95%e5%a4%a7%e9%87%8f%e5%88%b6%e5%a4%87%e8%b4%9f%e8%bd%bd","status":"publish","type":"post","link":"http:\/\/www.cailiaoniu.com\/?p=271995","title":{"rendered":"\u9999\u6e2f\u57ce\u5e02\u5927\u5b66\u5f6d\u548f\u5eb7\u8bfe\u9898\u7ec4\uff1a\u4e00\u6b65\u6cd5\u5927\u91cf\u5236\u5907\u8d1f\u8f7d\u578b\u8d85\u5c0fCeO2\u50ac\u5316\u5242\uff0c\u4f18\u5316\u5176Lewis\u9178\u6027\u5f3a\u5ea6\u4ee5\u7528\u4e8e2-\u6c30\u57fa\u5421\u5576\u8f85\u52a9\u7684\u78b3\u9178\u4e8c\u7532\u916f\u9ad8\u6548\u5408\u6210"},"content":{"rendered":"\n

\u4e00\u3001\u3010\u5bfc\u8bfb\u3011<\/strong><\/strong><\/p>\n\n\n\n

\u78b3\u9178\u4e8c\u7532\u916f\uff08DMC\uff09\u662f\u4e00\u79cd\u91cd\u8981\u7684\u7eff\u8272\u5316\u5de5\u539f\u6599\uff0c\u53ef\u5e7f\u6cdb\u5e94\u7528\u4e8e\u805a\u78b3\u9178\u916f\u3001\u9502\u7535\u6c60\u7535\u89e3\u6db2\u3001\u71c3\u6599\u6dfb\u52a0\u5242\u4ee5\u53ca\u7532\u57fa\u5316\/\u7fb0\u57fa\u5316\u53cd\u5e94\u4e2d\u3002\u76f8\u6bd4\u4f20\u7edf\u7684\u5149\u6c14\u6cd5\u548cCO\u6c27\u5316\u7fb0\u57fa\u5316\u8def\u7ebf\uff0c\u76f4\u63a5\u5229\u7528 CO2<\/sub> \u548c\u7532\u9187\u5408\u6210DMC\u66f4\u7b26\u5408\u7eff\u8272\u5316\u5b66\u7684\u53d1\u5c55\u65b9\u5411\u3002\u7136\u800c\uff0c\u8be5\u53cd\u5e94\u53d7\u5230\u70ed\u529b\u5b66\u5e73\u8861\u9650\u5236\uff0cDMC\u4ea7\u7387\u901a\u5e38\u8f83\u4f4e\u3002\u4e3a\u63a8\u52a8\u53cd\u5e94\u5e73\u8861\u5411\u4ea7\u7269\u65b9\u5411\u79fb\u52a8\uff0c\u5e38\u5f15\u5165\u8131\u6c34\u5242\u53bb\u9664\u53cd\u5e94\u751f\u6210\u7684\u6c34\uff0c\u5176\u4e2d2-\u6c30\u57fa\u5421\u5576\uff082-Cp\uff09\u56e0\u80fd\u591f\u5728CeO2<\/sub>\u50ac\u5316\u4e0b\u6c34\u5408\u751f\u62102-\u5421\u5576\u7532\u9170\u80fa\uff082-PA\uff09\uff0c\u88ab\u8ba4\u4e3a\u662f\u76ee\u524d\u6700\u6709\u6548\u7684\u6709\u673a\u8131\u6c34\u5242\u4e4b\u4e00\u3002<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

\u8fc7\u53bb\u5341\u4f59\u5e74\u4e2d\uff0c\u4ee5CeO2<\/sub>\u4e3a\u57fa\u7840\u7684\u50ac\u5316\u5242\u5728CO2<\/sub>\u4e0e\u7532\u9187\u76f4\u63a5\u5408\u6210DMC\u4ee5\u53ca2-Cp\u6c34\u5408\u53cd\u5e94\u4e2d\u53d7\u5230\u5e7f\u6cdb\u5173\u6ce8\u3002\u7136\u800c\uff0c\u9ad8\u6027\u80fdCeO2<\/sub>\u50ac\u5316\u5242\u7684\u5236\u5907\u5f80\u5f80\u975e\u5e38\u590d\u6742\uff0c\u6b65\u9aa4\u7e41\u591a\u4e14\u9700\u8981\u8fdb\u884c\u6e05\u6d17\uff0c\u8d39\u65f6\u8d39\u529b\uff0c\u4e0d\u5229\u4e8e\u653e\u5927\u751f\u4ea7\u3002\u540c\u65f6\uff0c\u4f20\u7edf\u7684NH3<\/sub>-TPD\u3001CO2<\/sub>-TPD\u548c\u5421\u5576\u7ea2\u5916\u7b49\u8868\u5f81\u65b9\u6cd5\u5206\u8fa8\u7387\u6709\u9650\uff0c\u96be\u4ee5\u51c6\u786e\u533a\u5206\u4e0d\u540c Ce \u4f4d\u70b9\u7684 Lewis \u9178\u5f3a\u5ea6\uff0c\u4e0d\u5229\u4e8e\u5efa\u7acb\u53ef\u9760\u7684\u6784\u6548\u5173\u7cfb\u3002<\/p>\n\n\n\n

\u4e3a\u89e3\u51b3\u4e0a\u8ff0\u95ee\u9898\uff0c\u672c\u5de5\u4f5c\u53d1\u5c55\u4e86\u4e00\u79cd\u7b80\u5355\u3001\u53ef\u89c4\u6a21\u5316\u3001\u65e0\u9700\u540e\u5904\u7406\u7684\u4e00\u6b65\u6cd5\u5236\u5907\u7b56\u7565\uff1a\u901a\u8fc7\u5728\u7a7a\u6c14\u4e2d\u7145\u70e7Ce(NO3<\/sub>)3<\/sub>\u4e0e\u805a\u4e59\u70ef\u5421\u54af\u70f7\u916e\uff08PVP\uff09\u7684\u6df7\u5408\u7269\uff0c\u5373\u53ef\u83b7\u5f97\u8d1f\u8f7d\u4e8e\u591a\u5b54\u78b3\u6846\u67b6\u4e2d\u7684\u8d85\u5c0fCeO2<\/sub>\u7eb3\u7c73\u9897\u7c92\u3002\u8be5\u78b3\u6846\u67b6\u4e0d\u4ec5\u80fd\u591f\u9ad8\u5bc6\u5ea6\u8d1f\u8f7dCeO2<\/sub>\uff0c\u8fd8\u80fd\u6709\u6548\u9632\u6b62\u5176\u5728\u9ad8\u6e29\u9ad8\u538b\u7684\u53cd\u5e94\u6761\u4ef6\u4e0b\u56e2\u805a\u3002\u7ed3\u5408TMPO-31<\/sup>P\u6838\u78c1\u5171\u632f\u548cDFT\u8ba1\u7b97\uff0c\u672c\u5de5\u4f5c\u63ed\u793a\u4e86Ce\u4f4d\u70b9Lewis\u9178\u5f3a\u5ea6\u5bf9DMC\u5408\u6210\u4ee5\u53ca 2-Cp \u6c34\u5408\u53cd\u5e94\u7684\u5173\u952e\u5f71\u54cd\uff0c\u5e76\u8bc1\u660e\u540e\u8005\u5bf9Ce\u4f4d\u70b9Lewis\u9178\u5f3a\u5ea6\u5c24\u4e3a\u654f\u611f\u3002<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

Scheme 1.<\/strong> Schematic illustration of the one-pot synthesis of CeO2<\/sub> nanoparticles supported by porous carbon framework.<\/p>\n\n\n\n

\u4e8c\u3001\u3010\u6210\u679c\u63a0\u5f71\u3011<\/strong><\/p>\n\n\n\n

\u672c\u5de5\u4f5c\u53d1\u5c55\u4e86\u4e00\u79cd\u7b80\u5355\u3001\u53ef\u89c4\u6a21\u5316\u3001\u65e0\u9700\u540e\u5904\u7406\u7eaf\u5316\u7684\u4e00\u6b65\u6cd5\u7b56\u7565\uff0c\u7528\u4e8e\u5236\u5907\u8d1f\u8f7d\u4e8e\u78b3\u6846\u67b6\u4e2d\u7684\u8d85\u5c0fCeO2<\/sub>\u7eb3\u7c73\u9897\u7c92\u3002\u5176\u4e2d\uff0c\u5728\u7a7a\u6c14\u4e2d400 \u2103\u7145\u70e7\u5f97\u5230\u7684Ce-400A\u6837\u54c1\u4e2d\u7684CeO2<\/sub>\u4ec5\u6709\u4e0d\u52305 nm\u7684\u5c3a\u5bf8\uff0c\u5e76\u57282-Cp\u8f85\u52a9\u7684DMC\u5408\u6210\u4e2d\u7684\u50ac\u5316\u6027\u80fd\u663e\u8457\u4f18\u4e8e\u5927\u591a\u6570\u5df2\u62a5\u9053CeO2<\/sub>\u50ac\u5316\u5242\u3002\u78b3\u6846\u67b6\u80fd\u591f\u6709\u6548\u6291\u5236CeO2<\/sub>\u9897\u7c92\u5728\u53cd\u5e94\u8fc7\u7a0b\u4e2d\u7684\u805a\u96c6\uff0c\u4f7f\u50ac\u5316\u5242\u5728\u8fde\u7eed\u5faa\u73af\u4e2d\u4fdd\u6301\u826f\u597d\u7684\u7a33\u5b9a\u6027\u3002\u501f\u52a9TMPO-31<\/sup>P NMR\uff0c\u672c\u7814\u7a76\u6210\u529f\u533a\u5206\u4e86\u4e0d\u540c\u6e29\u5ea6\u3001\u6c14\u6c1b\u4e0b\u7145\u70e7\u7684\u6837\u54c1\u4e2dCe\u4f4d\u70b9\u7684Lewis\u9178\u5f3a\u5ea6\uff0c\u5e76\u5efa\u7acb\u4e86\u5176\u4e0eDMC\u5408\u6210\u53ca2-Cp\u6c34\u5408\u6d3b\u6027\u4e4b\u95f4\u7684\u6b63\u76f8\u5173\u5173\u7cfb\uff0c\u5176\u4e2d2-Cp\u6c34\u5408\u53cd\u5e94\u5bf9Lewis\u9178\u5f3a\u5ea6\u66f4\u4e3a\u654f\u611f\u3002\u76f8\u6bd4\u4e4b\u4e0b\uff0c\u5373\u4f7f\u6837\u54c1\u7ecf\u6742\u539f\u5b50\uff08N\uff09\u4fee\u9970\u540e\u6d3b\u6027\u53d1\u751f\u660e\u663e\u4e0b\u964d, \u4f20\u7edf\u7684NH3<\/sub>-TPD\u548c\u5421\u5576\u7ea2\u5916\u6280\u672f\u4ecd\u96be\u4ee5\u5206\u8fa8\u8fd9\u4e9b\u5dee\u5f02\u3002DFT\u8ba1\u7b97\u8fdb\u4e00\u6b65\u8868\u660e\uff0c\u5728CeO2<\/sub>\uff08111\uff09\u9762\u4e0a\uff0c2-Cp\u7684\u53cc\u9f7f\u5438\u9644\u80fd\u591f\u4fc3\u4f7f\u5176\u901a\u8fc7\u6676\u683c\u6c27\u53c2\u4e0e\u7684\u7279\u6b8a\u8def\u5f84\u88ab\u6d3b\u5316\uff0c\u5e76\u5f62\u6210\u4e9a\u80fa\u578bN\u7269\u79cd\uff0c\u4ece\u800c\u4fc3\u8fdb\u540e\u7eed\u6c34\u5408\u53cd\u5e94\uff1b\u800c\u5728N\u4fee\u9970\u7684N-\uff08111\uff09\u8868\u9762\u4e0a\uff0c\u7531\u4e8eN\u914d\u4f4dCe\u4f4d\u70b9Lewis\u9178\u5f3a\u5ea6\u8f83\u5f31\uff0c2-Cp\u53ea\u80fd\u901a\u8fc7\u4f20\u7edf\u8def\u5f84\u6d3b\u5316\u3002\u8be5\u8def\u5f84\u6d3b\u5316\u80fd\u76f8\u5bf9\u8f83\u9ad8\uff0c\u5bfc\u81f4Ce-400N\u6d3b\u6027\u663e\u8457\u964d\u4f4e\u3002<\/p>\n\n\n\n

\u4e09\u3001\u3010\u6838\u5fc3\u521b\u65b0\u70b9\u3011<\/strong><\/p>\n\n\n\n

\u672c\u5de5\u4f5c\u4ecb\u7ecd\u4e86\u4e00\u79cd\u65e0\u9700\u7eaf\u5316\u3001\u53ef\u89c4\u6a21\u5316\u7684\u4e00\u6b65\u6cd5\u7b56\u7565\uff0c\u7528\u4e8e\u5236\u5907\u8d1f\u8f7d\u578b\u8d85\u5c0fCeO2<\/sub>\u50ac\u5316\u5242\uff1b\u540c\u65f6\u5229\u7528TMPO-31<\/sup>P NMR\u63ed\u793a\u4e86CeO2<\/sub>\u7c92\u5f84\u548c\u8868\u9762\u6742\u539f\u5b50\u4fee\u9970\u5bf9Ce\u4f4d\u70b9Lewis\u9178\u5f3a\u5ea6\u7684\u8c03\u63a7\u4f5c\u7528\uff0c\u5e76\u5efa\u7acb\u4e86\u53ef\u9760\u7684\u3001Lewis\u9178\u5f3a\u5ea6\u4e0eDMC\u5408\u6210\u53ca2-Cp\u6c34\u5408\u6d3b\u6027\u4e4b\u95f4\u7684\u6784\u6548\u5173\u7cfb\u3002<\/p>\n\n\n\n

\u56db\u3001\u3010\u6570\u636e\u6982\u89c8\u3011<\/strong><\/p>\n\n\n\n

\u8be5\u5de5\u4f5c\u5c06Ce(NO3<\/sub>)3<\/sub>\u4e0ePVP\u6df7\u5408\u540e\uff08\u6807\u8bb0\u4e3aCe-PVP\uff09\u5728\u7a7a\u6c14\u4e2d\u7145\u70e7\uff0c\u5236\u5907\u51fa\u4e00\u7cfb\u5217Ce-XA\u6837\u54c1\uff08X\u8868\u793a\u7145\u70e7\u6e29\u5ea6\uff0cA\u8868\u793a\u7a7a\u6c14\u6c1b\u56f4\uff09\u3002SEM\/TEM\u548cXRD\u7ed3\u679c\u8868\u660e\uff0c\u5f53\u7145\u70e7\u6e29\u5ea6\u4e3a400\u2013600 \u2103\u65f6\uff0c\u6837\u54c1\u5f62\u6210\u591a\u5b54\u78b3\u6846\u67b6\uff0c\u5e76\u5728\u5176\u4e2d\u9ad8\u5bc6\u5ea6\u8d1f\u8f7dCeO2<\/sub>\u7eb3\u7c73\u9897\u7c92\uff1b\u5f53\u6e29\u5ea6\u5347\u9ad8\u81f3700 \u2103\u65f6\uff0c\u78b3\u6846\u67b6\u51fa\u73b0\u90e8\u5206\u574d\u584c\u3002HRTEM\u7ed3\u679c\u663e\u793a\uff0c\u8fd9\u4e9bCeO2<\/sub>\u7eb3\u7c73\u9897\u7c92\u4e3b\u8981\u66b4\u9732\uff08111\uff09\u6676\u9762\u3002\u968f\u7740\u7145\u70e7\u6e29\u5ea6\u5347\u9ad8\uff0cCeO2<\/sub>\u7c92\u5f84\u7531Ce-400A\u7684\u7ea64.5 nm\u589e\u5927\u81f3Ce-700A\u7684\u7ea615.8 nm\u3002TGA\u7ed3\u679c\u8868\u660e\uff0cCe-PVP\u6df7\u5408\u7269\u5728\u7a7a\u6c14\u4e2d\u52a0\u70ed\u65f6\uff0c200 \u2103\u4ee5\u4e0b\u7684\u8d28\u91cf\u635f\u5931\u4e3b\u8981\u6765\u81ea\u6c34\u5206\u6325\u53d1\uff1b\u5728\u7ea6400 \u2103\u9644\u8fd1\u51fa\u73b0\u660e\u663e\u8d28\u91cf\u4e0b\u964d\uff0c\u4e3b\u8981\u662f\u7531\u4e8ePVP\u4e2d\u78b3\u7ec4\u5206\u7684\u53bb\u9664\u3002XPS\u7ed3\u679c\u8fdb\u4e00\u6b65\u8bf4\u660e\uff0c\u5728400 \u2103\u4ee5\u4e0a\u7145\u70e7\u540e\uff0c\u785d\u9178\u6839\u548c\u5421\u54af\u578bN\u7269\u79cd\u57fa\u672c\u88ab\u53bb\u9664\uff0cCe\u7269\u79cd\u7531\u524d\u9a71\u4f53\u4e2d\u7684Ce3+<\/sup>\u8f6c\u5316\u4e3aCeO2<\/sub>\u4e2d\u5178\u578b\u7684Ce4+<\/sup>\u3002\u4f46\u5728400 \u2103\u53ca\u4ee5\u4e0a\u65f6\uff0c\u6837\u54c1\u4e2dCe3+<\/sup>\/Ce4+<\/sup>\u7684\u6bd4\u4f8b\u5dee\u5f02\u5f88\u5c0f\uff0c\u63a5\u8fd1\u5e38\u89c4\u5546\u7528CeO2<\/sub>\u3002<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

Figure 1.<\/strong> (a) TEM (top) and SEM (bottom) images of samples and their corresponding (b) \ufeffXRD patterns. (c) Thermogravimetric analysis of Ce-PVP in air. (d) XPS O1s<\/sub> and (e) Ce3d<\/sub> spectra of the samples.<\/strong><\/p>\n\n\n\n

\u5728\u50ac\u5316\u6027\u80fd\u65b9\u9762\uff0c\u65e02-Cp\u6761\u4ef6\u4e0b\uff0c\u5404Ce-XA\u6837\u54c1\u5728DMC\u7684\u5408\u6210\u4e2d\u8868\u73b0\u51fa\u76f8\u8fd1\u6d3b\u6027\u3002\u7136\u800c\uff0c\u52a0\u51652-Cp\u540e\uff0c\u4e0d\u540c\u6837\u54c1\u7684DMC\u4ea7\u91cf\u51fa\u73b0\u663e\u8457\u5dee\u522b\uff0c\u987a\u5e8f\u4e3aCe-400A > Ce-500A > Ce-600A > Ce-700A\u3002\u4e0e\u6b64\u540c\u65f6\uff0c2-PA\u7684\u4ea7\u91cf\u4e0eDMC\u57fa\u672c\u5bf9\u5e94\uff0c\u8bf4\u660e2-Cp\u80fd\u591f\u4ee5\u8fd1\u4f3c\u4e00\u6bd4\u4e00\u7684\u65b9\u5f0f\u53bb\u9664\u53cd\u5e94\uff08DMC\u5408\u6210\uff09\u4ea7\u751f\u7684\u6c34\uff0c\u4ece\u800c\u63d0\u9ad8DMC\u4ea7\u91cf\u3002\u540c\u65f6\uff0c\u5728\u4f7f\u7528Ce-XA\u6837\u54c1\u5355\u72ec\u8fdb\u884c2-Cp\u6c34\u5408\u65f6\uff0c\u53cd\u5e94\u6d3b\u6027\u7684\u5f3a\u5f31\u987a\u5e8f\u4e0eDMC\u5408\u6210\uff08+2-Cp\uff09\u4e00\u81f4\u3002<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

Figure 2.<\/strong> (a) DMC production from the samples in the absence\/presence of 2-Cp at 140 \u00b0C, and (b) the corresponding production of 2-PA. (c) Apparent activation energy (Ea<\/sub>) of DMC synthesis with and without 2-Cp. (d) Rate constant and (e) apparent Ea<\/sub> of 2-Cp hydration over the samples.<\/p>\n\n\n\n

\u4e3a\u4e86\u8fdb\u4e00\u6b65\u7406\u89e3\u6d3b\u6027\u5dee\u5f02\uff0c\u8be5\u5de5\u4f5c\u9996\u5148\u91c7\u7528NH3<\/sub>-TPD\u548c\u5421\u5576\u7ea2\u5916\u5bf9Ce\u4f4d\u70b9\u8fdb\u884c\u8868\u5f81\u3002NH3<\/sub>-TPD\u663e\u793a\uff0c\u6240\u6709Ce-XA\u6837\u54c1\u5747\u8868\u73b0\u4e3a\u5f31Lewis\u9178\u4f4d\u70b9\uff0c\u8131\u9644\u6e29\u5ea6\u7ea6\u4e3a140\u2103\uff0c\u4e14\u9178\u6027\u4f4d\u70b9\u6570\u91cf\u5dee\u5f02\u4e0d\u660e\u663e\u3002\u5421\u5576\u7ea2\u5916\u4e2d\u4e0eLewis\u9178\u4f4d\u76f8\u5173\u7684\u4fe1\u53f7\u4f4d\u79fb\u4e5f\u5f88\u5c0f\uff0c\u96be\u4ee5\u533a\u5206\u4e0d\u540c\u6837\u54c1Ce\u4f4d\u70b9\u9178\u5f3a\u5ea6\u3002\u82e5\u4ec5\u4f9d\u8d56\u8fd9\u4e9b\u4f20\u7edf\u6280\u672f\uff0c\u5f88\u5bb9\u6613\u5f97\u51faCe-XA\u6837\u54c1Lewis\u9178\u6027\u8d28\u76f8\u8fd1\u7684\u7ed3\u8bba\u3002\u7136\u800c\uff0c NMR\u7ed9\u51fa\u4e86\u5b8c\u5168\u4e0d\u540c\u7684\u4fe1\u606f\u3002Ce-400A\u7684\u03b431<\/sup>P\u4f4d\u79fb\u6700\u9ad8\uff0c\u4e3a53.6 ppm\uff0c\u968f\u540e\u4f9d\u6b21\u4e3aCe-500A\uff0852. 4 ppm\uff09\u3001Ce-600A\uff0851.3 ppm\uff09\u548cCe-700A\uff0849.2 ppm\uff09\u3002\u8fd9\u8868\u660eCe\u4f4d\u70b9Lewis\u9178\u5f3a\u5ea6\u968fCeO2<\/sub>\u7c92\u5f84\u589e\u5927\u800c\u51cf\u5f31\u3002\u66f4\u91cd\u8981\u7684\u662f\uff0c\u867d\u7136Ce-400A\u66b4\u9732Ce\u4f4d\u70b9\u6570\u91cf\u5e76\u4e0d\u662f\u6700\u9ad8\uff0c\u4f46\u51762-Cp\u6c34\u5408\u6d3b\u6027\u6700\u9ad8\uff0c\u8bf4\u660e\u5bf9\u4e8e2-Cp\u6c34\u5408\u53cd\u5e94\u800c\u8a00\uff0cCe\u4f4d\u70b9Lewis\u9178\u5f3a\u5ea6\u6bd4\u66b4\u9732\u4f4d\u70b9\u6570\u91cf\u66f4\u4e3a\u5173\u952e\u3002<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

Figure 3.<\/strong> (a) (i) NH3<\/sub>-TPD results for the samples and (ii) corresponding amounts of weak acid sites. (b) Pyridine-IR spectra for the samples. (c) (i) TMPO-31<\/sup>P NMR spectra for the samples and (ii) relative amounts of exposed Ce sites derived from their \u03b431<\/sup>P peak areas (with the area of Ce-700A set as 100% for comparison). Correlation plots of \u03b431<\/sup>P for the samples versus their (d) CeO2<\/sub> particle sizes and (e) apparent Ea<\/sub> for 2-Cp hydration.<\/p>\n\n\n\n

\u8fdb\u4e00\u6b65\u5730\uff0c\u8be5\u5de5\u4f5c\u6bd4\u8f83\u4e86\u7a7a\u6c14\u7145\u70e7\u7684Ce-400A\u4e0e\u540c\u6837\u662f400 \u2103\u3001\u6c2e\u6c14\u4e2d\u7145\u70e7\u7684Ce-400N\u3002\u4e24\u8005\u5728\u7c92\u5f84\u3001\u6676\u9762\u548cCe3+<\/sup>\/Ce4+<\/sup>\u6bd4\u4f8b\u4e0a\u8f83\u4e3a\u76f8\u4f3c\uff0c\u4f46Ce-400N\u4e2d\u51fa\u73b0\u660e\u663eCe-N\u7269\u79cd\u3002\u4f20\u7edf\u7684NH3<\/sub>-TPD\u548c\u5421\u5576\u7ea2\u5916\u6280\u672f\u4ecd\u96be\u4ee5\u6709\u6548\u533a\u5206\u8fd9\u4e24\u4e2a\u6837\u54c1\uff0c\u800cNMR\u663e\u793aCe-400N\u7684\u03b431<\/sup>P\u660e\u663e\u4f4e\u4e8eCe-400A\uff0c\u4ece53.6 ppm\u4e0b\u964d\u81f346.9 ppm\uff0c\u8bf4\u660eN\u914d\u4f4d\u663e\u8457\u524a\u5f31\u4e86Ce\u4f4d\u70b9Lewis\u9178\u5f3a\u5ea6\u3002\u5c06\u5404\u4e2a\u6837\u54c1\u7684Lewis\u9178\u6027\u4e0e\u53cd\u5e94\u6d3b\u6027\u5173\u8054\u8d77\u6765\u53ef\u4ee5\u53d1\u73b0\uff0c\u76f8\u6bd4\u4e8eDMC\u5408\u6210\uff08\u4e0d\u52a02-Cp\uff09\uff0c2-Cp\u6c34\u5408\u53cd\u5e94\u5bf9\u4e8e\u9178\u6027\u66f4\u4e3a\u654f\u611f\u3002<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

Figure 4. <\/strong>Correlation plot of \u03b431<\/sup>P for the samples versus their DMC yield (left) and rate constants obtained at 70\u00b0C for 2-Cp hydration (right), normalized by the relative concentration of exposed Ce sites derived from their \u03b431<\/sup>P peak areas.<\/p>\n\n\n\n

DFT\u8ba1\u7b97\u8fdb\u4e00\u6b65\u4ece\u539f\u5b50\u5c3a\u5ea6\u63ed\u793a\u4e86N\u914d\u4f4d\u964d\u4f4e\u6d3b\u6027\u7684\u539f\u56e0\u3002\u5bf9\u4e8eCe-400A\u4e2d\u7684\u539f\u59cbCeO2<\/sub>\uff08111\uff09\u9762\uff0c2-Cp\u53ef\u4ee5\u901a\u8fc7\u5421\u5576-N\u548c\u6c30\u57fa-N\u4e0e\u76f8\u90bbCe\u4f4d\u70b9\u5f62\u6210\u53cc\u9f7f\u534f\u540c\u5438\u9644\uff0c\u4f7f\u6676\u683c\u6c27\u80fd\u591f\u8fdb\u4e00\u6b65\u5bf9\u6c30\u57fa-C\u8fdb\u884c\u4eb2\u6838\u52a0\u6210\uff0c\u751f\u6210\u5177\u6709\u66f4\u5f3aLewis\u78b1\u6027\u7684\u4e9a\u80fa\u578bN\uff0c\u4ece\u800c\u4fc3\u8fdb\u540e\u7eed\u6c34\u5408\u53cd\u5e94\u3002\u76f8\u6bd4\u4e4b\u4e0b\uff0c\u5728N\u4fee\u9970\u7684N-(111)\u8868\u9762\uff0cN\u914d\u4f4d\u4f7fCe\u4f4d\u70b9\u7535\u5b50\u5bc6\u5ea6\u5347\u9ad8\u3001Lewis\u9178\u6027\u51cf\u5f31\uff0c\u5bfc\u81f42-Cp\u4e0e\u8868\u9762\u7684\u76f8\u4e92\u4f5c\u7528\u53d8\u5f31\uff0c\u5e76\u503e\u5411\u4e8e\u7ecf\u8fc7\u66f4\u9ad8\u80fd\u5792\u7684\u4f20\u7edfLewis\u9178\u6d3b\u5316\u8def\u5f84\uff0c\u56e0\u800c\u8868\u73b0\u51fa\u66f4\u5f31\u7684\u53cd\u5e94\u6d3b\u6027\u3002<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

Figure <\/strong>5<\/strong>.<\/strong> (a) Bader charge analysis of Ce sites and (b) adsorption energy of TMPO on the (111) and N-(111) surfaces. (c) Schematic illustration of 2-Cp hydration by two neighboring Ce sites on the (111) surface. (d) The distances between N atoms in 2-Cp and Ce sites on the (111) surface. Adsorption energy of (i) 2-Cp and (ii) its charge analysis on (e) (111) and (e) N-(111) surfaces.<\/p>\n\n\n\n

\u6700\u540e\uff0c\u4e3a\u4e86\u8bc1\u660e\u78b3\u6846\u67b6\u7684\u4f5c\u7528\uff0c\u8be5\u5de5\u4f5c\u5bf9\u6bd4\u4e86\u65e0\u8f7d\u4f53\u7684CeO2<\/sub>\u7eb3\u7c73\u9897\u7c92\uff08Ce-sphere\uff09\u3002\u867d\u7136\u5b83\u7684\u7c92\u5f84\u3001Lewis\u9178\u5f3a\u5ea6\u4e0eCe-400A\u63a5\u8fd1\uff0c\u4f46\u5176\u5728DMC\u5408\u6210\u7684\u53cd\u5e94\u6761\u4ef6\u4e0b\u5bb9\u6613\u56e2\u805a\uff0c\u5bfc\u81f4DMC\u4ea7\u7387\u4e0b\u964d\u4e14\u5faa\u73af\u6027\u80fd\u53d8\u5dee\u3002\u76f8\u6bd4\u4e4b\u4e0b\uff0cCe-400A\u4e2d\u7684\u78b3\u6846\u67b6\u53ef\u4ee5\u6709\u6548\u9632\u6b62CeO2<\/sub>\u7eb3\u7c73\u9897\u7c92\u7684\u805a\u96c6\uff0c\u4f7f\u5176\u5728\u8fde\u7eed\u4e09\u6b21\u5faa\u73af\u4e2d\u4fdd\u6301\u8f83\u9ad8DMC\u4ea7\u91cf\u3001\u826f\u597d\u5206\u6563\u6027\u548cLewis\u9178\u5f3a\u5ea6\u3002\u6b64\u5916\uff0c\u4e0d\u540c\u6279\u6b21Ce-400A\u7684DMC\u6d3b\u6027\u5dee\u5f02\u5f88\u5c0f\uff0c\u4e14\u662f\u5426\u8fdb\u884c\u6e05\u6d17\u7eaf\u5316\u5bf9\u6d3b\u6027\u5f71\u54cd\u4e0d\u660e\u663e\uff0c\u8bf4\u660e\u8be5\u5236\u5907\u65b9\u6cd5\u5177\u6709\u826f\u597d\u7684\u53ef\u91cd\u590d\u6027\u548c\u5927\u89c4\u6a21\u751f\u4ea7\u7684\u6f5c\u529b\u3002<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

Figure <\/strong>6<\/strong>. <\/strong>(a) TEM image and particle size distribution of Ce-sphere. (b) DMC activity of the samples (with 2-Cp) over three consecutive cycles, with run1 activity set as 100% for comparison. (c) DLS results of Ce-sphere tracked after each cycle, along with TEM images of the samples after the third cycle. (d) DMC activity of Ce-400A (with 2-Cp) across different batches before and after washing, with activity of the first batch (before washing) set as 100% for comparison.<\/p>\n\n\n\n

\u4e94\u3001\u3010\u6210\u679c\u542f\u793a\u3011<\/strong><\/p>\n\n\n\n

\u672c\u5de5\u4f5c\u4ece\u201c\u50ac\u5316\u5242\u5236\u5907\u201d\u548c\u201c\u6d3b\u6027\u4f4d\u70b9\u8ba4\u77e5\u201d\u4e24\u4e2a\u5c42\u9762\u63a8\u8fdb\u4e86CeO2<\/sub>\u50ac\u5316DMC \u5408\u6210\u7684\u7814\u7a76\u3002\u4e00\u65b9\u9762\uff0c\u8be5\u5de5\u4f5c\u63d0\u51fa\u7684\u4e00\u6b65\u7a7a\u6c14\u7145\u70e7\u7b56\u7565\u6781\u5927\u7b80\u5316\u4e86\u8d1f\u8f7d\u578b\u8d85\u5c0fCeO2<\/sub>\u50ac\u5316\u5242\u7684\u5236\u5907\u6d41\u7a0b\uff0c\u65e0\u9700\u590d\u6742\u6e05\u6d17\u6216\u540e\u5904\u7406\uff0c\u5373\u53ef\u83b7\u5f97\u80fd\u591f\u76f4\u63a5\u4f7f\u7528\u7684\u9ad8\u6d3b\u6027\u6837\u54c1\uff0c\u4e3aCeO2<\/sub>\u50ac\u5316\u5242\u89c4\u6a21\u5316\u5236\u5907\u63d0\u4f9b\u4e86\u53ef\u884c\u65b9\u6848\u3002\u53e6\u4e00\u65b9\u9762\uff0cNMR\u63ed\u793a\u4e86\u4f20\u7edfNH3<\/sub>-TPD\u548c\u5421\u5576\u7ea2\u5916\u6280\u672f\u96be\u4ee5\u9ad8\u6548\u5206\u8fa8Lewis\u9178\u5f3a\u5ea6\u5dee\u5f02\uff0c\u8bf4\u660e\u5728\u5efa\u7acbCeO2<\/sub>\u50ac\u5316\u6784\u6548\u5173\u7cfb\u65f6\uff0c\u4e0d\u80fd\u4ec5\u4f9d\u8d56\u4f20\u7edf\u7684\u6574\u4f53\u6027\u8868\u5f81\u624b\u6bb5\uff0c\u800c\u5e94\u5173\u6ce8\u5177\u4f53Ce\u4f4d\u70b9\u7684\u771f\u5b9e\u7535\u5b50\u7ed3\u6784\u548c\u53cd\u5e94\u7269\u6d3b\u5316\u80fd\u529b\u3002<\/p>\n\n\n\n

\u539f\u6587\u8be6\u60c5\uff1a<\/strong>Xiao, Zhanping, et al. ” Scalable one-step preparation of supported ultrasmall CeO2<\/sub> with optimized Lewis acid strength for efficient dimethyl carbonate synthesis using 2\u2011cyanopyridine” ACS Catalysis<\/em> 14 (2024): 16861-16871.<\/p>\n\n\n\n

https:\/\/doi.org\/10.1016\/j.apcatb.2026.126992<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

\u4e00\u3001\u3010\u5bfc\u8bfb\u3011 \u78b3\u9178\u4e8c\u7532\u916f\uff08DMC\uff09\u662f\u4e00\u79cd\u91cd\u8981\u7684\u7eff\u8272\u5316\u5de5\u539f\u6599\uff0c\u53ef\u5e7f\u6cdb\u5e94\u7528\u4e8e\u805a\u78b3\u9178\u916f\u3001\u9502\u7535\u6c60\u7535\u89e3\u6db2\u3001\u71c3\u6599\u6dfb\u52a0\u5242\u4ee5\u53ca\u7532\u57fa\u5316\/\u7fb0\u57fa\u5316\u53cd\u5e94\u4e2d\u3002\u76f8\u6bd4\u4f20\u7edf\u7684\u5149\u6c14\u6cd5\u548cCO\u6c27\u5316\u7fb0…<\/p>\n","protected":false},"author":31345,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2],"tags":[],"class_list":["post-271995","post","type-post","status-publish","format-standard","hentry","category-keji"],"_links":{"self":[{"href":"http:\/\/www.cailiaoniu.com\/index.php?rest_route=\/wp\/v2\/posts\/271995"}],"collection":[{"href":"http:\/\/www.cailiaoniu.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.cailiaoniu.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.cailiaoniu.com\/index.php?rest_route=\/wp\/v2\/users\/31345"}],"replies":[{"embeddable":true,"href":"http:\/\/www.cailiaoniu.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=271995"}],"version-history":[{"count":1,"href":"http:\/\/www.cailiaoniu.com\/index.php?rest_route=\/wp\/v2\/posts\/271995\/revisions"}],"predecessor-version":[{"id":272004,"href":"http:\/\/www.cailiaoniu.com\/index.php?rest_route=\/wp\/v2\/posts\/271995\/revisions\/272004"}],"wp:attachment":[{"href":"http:\/\/www.cailiaoniu.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=271995"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.cailiaoniu.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=271995"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.cailiaoniu.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=271995"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}