{"id":74173,"date":"2017-04-05T06:30:31","date_gmt":"2017-04-04T22:30:31","guid":{"rendered":"\/\/m.iemloyee.com\/?p=74173"},"modified":"2017-04-04T09:47:10","modified_gmt":"2017-04-04T01:47:10","slug":"%e6%9c%80%e6%96%b0science%ef%bc%9a%e7%a2%b3%e8%bd%bd%e9%87%91%e5%82%ac%e5%8c%96%e4%b9%99%e7%82%94%e6%b0%a2%e6%b0%af%e5%8c%96%e7%9a%84%e6%9c%ba%e7%90%86%e5%88%86%e6%9e%90","status":"publish","type":"post","link":"\/\/m.iemloyee.com\/?p=74173","title":{"rendered":"Science\uff1a\u78b3\u8f7d\u91d1\u50ac\u5316\u4e59\u7094\u6c22\u6c2f\u5316\u7684\u673a\u7406\u5206\u6790"},"content":{"rendered":"

\u3010\u5f15\u8a00\u3011<\/strong><\/p>\n

\u8fc7\u53bb\u7684\u51e0\u5341\u5e74\u91cc\uff0c\u4e2d\u56fd\u5728\u6c2f\u4e59\u70ef\u5355\u4f53\uff08VCM\uff09\u7684\u751f\u4ea7\u5236\u5907\u4e0a\u53d1\u5c55\u5f02\u5e38\u8fc5\u901f\uff0c\u5176\u90e8\u5206\u539f\u56e0\u662f\u7164\u53ef\u4ee5\u4f5c\u4e3a\u4e59\u7094\u7684\u751f\u4ea7\u539f\u6599\u3002\u5229\u7528\u78b3\u8f7d\u6c2f\u5316\u6c5e\u4f5c\u4e3a\u4e59\u7094\u6c22\u6c2f\u5316\u7684\u4e3b\u8981\u50ac\u5316\u5242\u5236\u5907VCM\u65f6\uff0c\u6c5e\u6c61\u67d3\u7b49\u4e25\u91cd\u7684\u73af\u5883\u95ee\u9898\u4e5f\u968f\u4e4b\u800c\u6765\u3002\u78b3\u8f7d\u91d1\u50ac\u5316\u5242\u7684\u51fa\u73b0\u7f13\u89e3\u4e86\u7094\u70c3\u6c22\u6c2f\u5316\u5bf9\u73af\u5883\u9020\u6210\u7684\u5f71\u54cd\uff0c\u5229\u7528\u6ce2\u8c31\u5206\u6790\u548c\u7535\u955c\u8868\u5f81\u7b49\u624b\u6bb5\uff0c\u79d1\u7814\u5de5\u4f5c\u8005\u4eec\u53d1\u73b0\u91d1\u7eb3\u7c73\u9897\u7c92\u4ee5\u53ca\u5176\u6d3b\u6027\u4f4d\u70b9\u4e3b\u8981\u4e0e\u91d1\u9633\u79bb\u5b50\u6709\u5173\u3002\u6b64\u524d\uff0c\u4e5f\u6709\u90e8\u5206\u7814\u7a76\u4eba\u5458\u8fdb\u884c\u8fc7\u5355\u91d1\u79bb\u5b50\u5f02\u76f8\u50ac\u5316\u7684\u63a2\u7d22\uff0c\u4f46\u8fd9\u4e9b\u6750\u6599\u5728\u53cd\u5e94\u8fc7\u7a0b\u4e2d\u5f88\u5bb9\u6613\u5f62\u6210\u91d1\u7eb3\u7c73\u56e2\u7c07\u6216\u8005\u7eb3\u7c73\u7c92\u5b50\uff0c\u4ece\u800c\u5bfc\u81f4\u50ac\u5316\u5242\u5931\u6d3b\u3002\u78b3\u8f7d\u91d1\u50ac\u5316\u4e59\u7094\u6c22\u6c2f\u5316\u7684\u673a\u7406\u548c\u672c\u8d28\uff0c\u4e5f\u5c1a\u672a\u6709\u8fc7\u62a5\u9053\uff0c\u56e0\u800c\u5bf9\u4e8e\u79d1\u7814\u754c\u800c\u8a00\uff0c\u5176\u4ecd\u65e7\u8fd8\u662f\u4e00\u4e2a\u672a\u89e3\u7684\u8c1c\u56e2\u3002<\/p>\n

\u3010\u6210\u679c\u7b80\u4ecb\u3011<\/strong><\/p>\n

\u5317\u4eac\u65f6\u95f42017<\/strong>\u5e74<\/strong>3<\/strong>\u6708<\/strong>31<\/strong>\u65e5<\/strong>\uff0c \u82f1\u56fd\u5361\u8fea\u592b\u5927\u5b66<\/span>Graham J. Hutchings<\/strong>\u6559\u6388<\/strong>(<\/strong>\u901a\u8baf\u4f5c\u8005<\/strong>)<\/strong>\u5728Science<\/strong>\u4e0a\u53d1\u8868\u4e86\u4e00\u7bc7\u9898\u4e3a\u201cIdentification of single-site gold catalysis in acetylene hydrochlorination<\/strong>\u201d\u7684\u6587\u7ae0\uff0c\u5bf9\u78b3\u8f7d\u91d1(Au\/C)\u50ac\u5316\u4e59\u7094\u6c22\u6c2f\u5316\u53cd\u5e94\u7684\u673a\u7406\u505a\u4e86\u7cfb\u7edf\u800c\u53c8\u5168\u9762\u9610\u8ff0\u3002\u7814\u7a76\u4eba\u5458\u5229\u7528\u539f\u4f4dXAFS\u548cDFT\u6a21\u62df\u8ba1\u7b97\uff0c\u5bf9\u53cd\u5e94\u4e2dAu\/C\u50ac\u5316\u5242\u7684\u7ed3\u6784\u8f6c\u53d8\u8fdb\u884c\u4e86\u6df1\u5165\u7684\u7814\u7a76\u63a2\u7d22\uff0c\u53d1\u73b0\u7531\u5355\u4f4d\u70b9\u91d1\u79bb\u5b50\u6784\u6210\u7684\u50ac\u5316\u5242\uff0c\u5176\u50ac\u5316\u6d3b\u6027\u7684\u9ad8\u4f4e\u548cAu(I):Au(III)\u7684\u6bd4\u4f8b\u76f4\u63a5\u76f8\u5173\u3002\u57fa\u4e8eAu(I)-Au(III) \u7269\u79cd\u7684\u6c27\u5316\u8fd8\u539f\u548c\u7406\u8bba\u6a21\u62df\u8ba1\u7b97\uff0c\u7814\u7a76\u4eba\u5458\u63d0\u51fa\u4e86\u5355\u6d3b\u6027\u4f4d\u70b9\u91d1\u50ac\u5316\u4e59\u7094\u6c22\u6c2f\u5316\u53cd\u5e94\u7684\u673a\u7406\u3002<\/p>\n

\u3010\u56fe\u6587\u5bfc\u8bfb\u3011<\/strong><\/p>\n

\u56fe<\/strong>1\u00a0 <\/strong>\u65b0\u5236<\/strong>1 wt% <\/strong>\u78b3\u8f7d\u91d1<\/strong>–<\/strong>\u738b\u6c34<\/strong>(Au\/C-AR)<\/strong>\u50ac\u5316\u5242\u7684\u8868\u5f81<\/strong><\/p>\n

\"\"<\/p>\n

(A)\u00a0 <\/strong>Au\/C-AR\u50ac\u5316\u5242\u7684STEM-HAADF\u8868\u5f81\u56fe\u50cf\uff0c\u4ece\u56fe\u4e2d\u53ef\u4ee5\u89c2\u5bdf\u5230\u9ad8\u5ea6\u5206\u6563\u7684Au\u7269\u79cd\uff1b<\/p>\n

(B)\u00a0 <\/strong>\u8be5\u50ac\u5316\u5242\u7684XRD\u8868\u5f81\uff1b<\/p>\n

(C)\u00a0 <\/strong>\u4ee5\u91d1\u7b94\u4e3a\u53c2\u8003\uff0c\u50ac\u5316\u5242\u6837\u54c1\u7684\u5085\u7acb\u53f6\u53d8\u6362k3<\/sup>\u52a0\u6743\u03c7 EXAFS\u8868\u5f81\u56fe\u8c31\u2014\u2014\u5085\u91cc\u53f6\u53d8\u6362\u5f3a\u5ea6|\u03c7| vs. \u8ddd\u91d1\u5438\u6536\u5242\u8ddd\u79bbR\uff1b<\/p>\n

(D)\u00a0 <\/strong>\u50ac\u5316\u5242\u6837\u54c1\u7684Au L3<\/sub>\u8fb9\u7f18\u5f52\u4e00\u5316XANES\u56fe\u8c31\uff0c\u4ee5\u91d1\u7b94\u4e3a\u53c2\u8003\uff1b<\/p>\n

\u56fe<\/strong>2\u00a0 1 wt% Au\/C-AR<\/strong>\u50ac\u5316\u5242\u7684\u6c2f\u4e59\u70ef\u5355\u4f53<\/strong>(VCM)<\/strong>\u4ea7\u7387\u548c\u539f\u4f4d\u8868\u5f81<\/strong><\/p>\n

\"\"<\/p>\n

(A)\u00a0 <\/strong>\u50ac\u5316\u6027\u80fd(\u9ed1\u7ebf)\u548c\u5f52\u4e00\u5316\u767d\u7ebf\u5f3a\u5ea6(\u84dd\u7ebf)\u4e0e\u53cd\u5e94\u65f6\u95f4\u7684\u51fd\u6570\u5173\u7cfb\u56fe\uff1b<\/p>\n

(B)\u00a0 <\/strong>\u5229\u7528\u539f\u4f4dXANES\u8868\u5f81\u6240\u5f97\u7684\u8fde\u7eedAu L3<\/sub>\u8fb9\u7f18\u4e09\u7ef4\u8f6e\u5ed3\u56fe\uff1b<\/p>\n

(C)\u00a0 <\/strong>\u53cd\u5e94240 min\u540e\uff0cAu\/C-AR\u7684STEM-HAADF\u56fe\u50cf\uff0c\u7531\u56fe\u5206\u6790\u53ef\u77e5\u6837\u54c1\u4e2d\u5b58\u5728Au\u539f\u5b50\u5206\u6563\u7ec4\u5206\u548c\u5c11\u6570\u4e9a\u7eb3\u7c73\u56e2\u7c07\uff1b<\/p>\n

\u56fe<\/strong>3\u00a0 <\/strong>\u524d<\/strong>90 min<\/strong>\uff0c<\/strong>1 wt% Au\/C<\/strong>\u4e0d\u540c\u50ac\u5316\u5242\u7684\u6c2f\u4e59\u70ef\u5355\u4f53<\/strong>(VCM)<\/strong>\u4ea7\u7387\u548c\u539f\u4f4d<\/strong>XAFS<\/strong>\u8868\u5f81<\/strong><\/p>\n

\"\"<\/p>\n

(A)\u00a0 <\/strong>\u4e0d\u540c\u50ac\u5316\u73af\u5883\u4e0b\u7684\u50ac\u5316\u6027\u80fd(\u9ed1\u7ebf)\u548c\u76f8\u5e94\u7684\u5f52\u4e00\u5316\u767d\u7ebf\u5f3a\u5ea6\u66f2\u7ebf(\u84dd\u7ebf)\u8868\u5f81\uff1a\u785d\u9178\u3001\u786b\u4ee3\u786b\u9178\u76d0\u6eb6\u6db2\u548c\u6c34\uff1b<\/p>\n

(B)\u00a0 <\/strong>\u50ac\u5316\u5242\u6837\u54c1\u7684\u5085\u7acb\u53f6\u53d8\u6362k3<\/sup>\u52a0\u6743\u03c7 EXAFS\u8868\u5f81\u56fe\u8c31\uff1aAu\/C-HNO3 (\u9ed1\u7ebf)\u3001Au\/C-S2O3 (\u84dd\u7ebf)\u3001Au\/C-H2O (\u7eff\u7ebf)\u3001\u53c2\u8003\u91d1\u7b94(\u7ea2\u7ebf)\uff1b<\/p>\n

(C)\u00a0 <\/strong>VCM\u4ea7\u7387vs. \u767d\u7ebf\u5f3a\u5ea6\u66f2\u7ebf\uff0c\u5176\u4e2d\u865a\u7ebf\u8868\u793a\u6807\u51c6Au(I) [AuCl2<\/sub>]–<\/sup> (\u503c\u4e3a0.6)\u548c\u6807\u51c6Au(III) KAuCl4<\/sub> (\u503c\u4e3a1.1)\u7684\u767d\u7ebf\u5f3a\u5ea6\uff1b<\/p>\n

\u56fe<\/strong>4\u00a0 <\/strong>\u50ac\u5316\u8fc7\u7a0b\u673a\u7406\u56fe<\/strong><\/p>\n

\"\"<\/p>\n

\u50ac\u5316\u8fc7\u7a0b\u4e2d\uff0c\u4e0a\u8ff0\u7ed3\u6784\u793a\u610f\u56fe\u5c55\u793a\u4e86AuCl\u5230AuCl2<\/sub>H\u7684\u8f6c\u53d8\uff0c\u4ee5\u53ca\u751f\u6210VCM\u540e\uff0c\u5b9e\u73b0AuCl\u7684\u518d\u751f,\u5176\u4e2dAu\u539f\u5b50(\u91d1\u8272)\u3001Cl\u539f\u5b50(\u7eff\u8272)\u3001H\u539f\u5b50(\u767d\u8272)\u3001C\u539f\u5b50(\u7070\u8272)\u3001O\u539f\u5b50(\u7ea2\u8272)\u3002<\/p>\n

\u6761\u5f62\u56fe\u663e\u793a\u7684\u5219\u662f\u6bcf\u4e2aAu\u539f\u5b50\u4e0a\u6700\u5c0f\u7684\u7ed3\u5408\u80fd\u548cHirshfeld\u7535\u8377\uff0c\u5176\u4e2d\u5404\u9636\u6bb5\u7684\u80fd\u91cf\u90fd\u662f\u7ecf\u8fc7\u51e0\u4f55\u4f18\u5316\u914d\u7f6e\u800c\u5f97\u7684\u3002<\/p>\n

\u3010\u5c0f\u7ed3\u3011<\/strong><\/p>\n

\u7ed3\u5408DFT\u6a21\u62df\u8ba1\u7b97\u3001\u6ce2\u8c31\u5206\u6790\u548c\u7535\u955c\u539f\u4f4d\u8868\u5f81\u5206\u6790\uff0c\u7814\u7a76\u4eba\u5458\u63ed\u793a\u4e86\u4e59\u7094\u6c22\u6c2f\u5316\u53cd\u5e94\u7684\u6d3b\u6027\u4f4d\u70b9\u2014\u2014\u8d1f\u8f7d\u7684\u91d1\u9633\u79bb\u5b50\u3002\u5728\u50ac\u5316\u8fc7\u7a0b\u4e2d\uff0c\u901a\u8fc7Au(I)-Au(III)\u95f4\u7684\u50ac\u5316\u5faa\u73af\uff0c\u8bc1\u5b9e\u4e86Au\u4f5c\u4e3a\u7094\u70c3\u6c22\u6c2f\u5316\u53cd\u5e94\u6700\u4f73\u50ac\u5316\u5242\u7684\u9884\u6d4b\u3002\u672c\u6587\u63d0\u51fa\u7684Au\/C\u50ac\u5316\u4e59\u7094\u6c22\u6c2f\u5316\u53cd\u5e94\u7684\u673a\u7406\uff0c\u53ef\u4ee5\u4e3a\u4e0d\u540c\u7094\u70c3\u7684\u6c22\u5364\u5316\u53cd\u5e94\u63d0\u4f9b\u6709\u6548\u7684\u7406\u8bba\u6307\u5bfc\u548c\u8bbe\u8ba1\u7406\u5ff5\u3002<\/p>\n

\u539f\u6587\u94fe\u63a5\uff1a<\/strong>Identification of single-site gold catalysis in acetylene hydrochlorination<\/a>(Science, 2017, DOI: 10.1126\/science.aal3439)<\/p>\n

\u672c\u6587\u7531\u6750\u6599\u4eba\u65b0\u80fd\u6e90\u7ec4 \u6df1\u6d77\u4e07\u91cc \u4f9b\u7a3f\uff0c\u6750\u6599\u725b\u7f16\u8f91\u6574\u7406\u3002\u53c2\u4e0e\u65b0\u80fd\u6e90\u8bdd\u9898\u8ba8\u8bba\u8bf7\u52a0\u5165\u201c\u6750\u6599\u4eba\u65b0\u80fd\u6e90\u6750\u6599\u4ea4\u6d41\u7fa4 422065952\u201d\u3002<\/p>\n

\u6750\u6599\u725b\u7f51\u4e13\u6ce8\u4e8e\u8ddf\u8e2a\u6750\u6599\u9886\u57df\u79d1\u6280\u53ca\u884c\u4e1a\u8fdb\u5c55\uff0c\u8fd9\u91cc\u6c47\u96c6\u4e86\u5404\u5927\u9ad8\u6821\u7855\u535a\u751f\u3001\u4e00\u7ebf\u79d1\u7814\u4eba\u5458\u4ee5\u53ca\u884c\u4e1a\u4ece\u4e1a\u8005\uff0c\u5982\u679c\u60a8\u5bf9\u4e8e\u8ddf\u8e2a\u6750\u6599\u9886\u57df\u79d1\u6280\u8fdb\u5c55\uff0c\u89e3\u8bfb\u9ad8\u6c34\u5e73\u6587\u7ae0\u6216\u662f\u8bc4\u8ff0\u884c\u4e1a\u6709\u5174\u8da3\uff0c\u70b9\u6211\u52a0\u5165\u6750\u6599\u4eba\u7f16\u8f91\u90e8<\/a>\u3002<\/p>\n

\u6750\u6599\u6d4b\u8bd5\uff0c\u6570\u636e\u5206\u6790\uff0c\u4e0a<\/strong>\u6d4b\u8bd5\u8c37<\/strong><\/a>\uff01<\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"

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