CAJ | 학술논문

采用微波加热一步合成了介孔有机-无机互穿网络材料。以材料孔道表面硅羟基为还原剂，氮原子和硫原子作为稳定剂成功制备了负载型纳米金催化剂。采用N2吸附-脱附、ICP、TEM及FT-IR等表征方法对所得催化剂进行了表征。以苯乙烯环氧化反应作为探针反应，考察了反应时间、反应温度、氧化剂用量、Au负载量、催化剂用量等反应条件对苯乙烯环氧化反应的影响。在最佳的反应条件下，苯乙烯的转化率和环氧化物的选择性分别达到98％和95％，且催化剂在使用5次后，催化活性基本不变。
채용미파가열일보합성료개공유궤-무궤호천망락재료。이재료공도표면규간기위환원제，담원자화류원자작위은정제성공제비료부재형납미금최화제。채용N2흡부-탈부、ICP、TEM급FT-IR등표정방법대소득최화제진행료표정。이분을희배양화반응작위탐침반응，고찰료반응시간、반응온도、양화제용량、Au부재량、최화제용량등반응조건대분을희배양화반응적영향。재최가적반응조건하，분을희적전화솔화배양화물적선택성분별체도98％화95％，차최화제재사용5차후，최화활성기본불변。
Mesoporous organic-inorganic interpenetrating networks were synthesized via a microwave-assisted one-step process.With the resultant materials as support, supported gold nanoparticle ( GNP) catalysts were suc-cessfully fabricated by using silanols on the pore surface of the networks as reducing agent and nitrogen/sulfur spe-cies as stabilizer.The supported GNP catalysts were characterized by N2 adsorption-desorption, ICP, TEM, and FT-IR techniques.With epoxidation of styrene as test reaction, the effects of reaction parameters, such as reaction time and temperature, oxidant amount, Au content and catalyst amount, on catalysis performance of the GNP cata-lysts were investigated.Under optimum conditions, 98% of styrene conversion with 95% of selectivity to styrene epoxide was obtained.Moreover, the catalyst could be reused for five times without significant loss of catalytic ac-tivity.