微波辐照促进的甲醇水蒸汽重整制氢Cu/ZnO/Al_2O_3催化剂  

Microwave-irradiation Promoted Cu/ZnO/Al_2O_3 Catalyst for Hydrogen Production from Steam Reforming of Methanol

作　　者：张新荣[1] 姚成漳[1] 王路存[1] 曹勇[1] 吴东[2] 孙予罕[2] 戴维林[1] 范康年[1] 

机构地区：[1]复旦大学化学系上海市分子催化与功能材料重点实验室,上海200433 [2]中国科学院山西煤炭化学研究所,煤转化国家重点实验室,太原030001

出　　处：《高等学校化学学报》2005年第6期1137-1139,共3页Chemical Journal of Chinese Universities

基　　金：国家自然科学基金(批准号:20473021;20203003);国家自然科学创新群体基金(批准号:20421303);国家重点基础发展规划(批准号:2003CB615807);上海市科技启明星计划(批准号:02QA14006)资助.

摘　　要：We demonstrate for the first time that a short time of microwave irradiation on the oxide precursor of a Cu/ZnO/Al2O3 catalyst can provide unique opportunity for tailoring the microstructure and activity of the catalyst for methanol steam reforming. It is shown by in situ XRD that a considerable increase in the microstrain of Cu nanocrystals could be achieved in the catalysts processed by microwave irradiation for 310 min, which correlates well with the enhanced CH3OH conversion as observed on the corresponding samples. The present work also confirms that although the high specific surface area of Cu is a prerequisite for catalytic activity, it does not account for the observed changes in activity and selectivity alone without taking bulk microstructural changes into account.We demonstrate for the first time that a short time of microwave irradiation on the oxide precursor of a Cu/ZnO/Al_2O_3 catalyst can provide unique opportunity for tailoring the microstructure and activity of the catalyst for methanol steam reforming. It is shown by in situ XRD that a considerable increase in the microstrain of Cu nanocrystals could be achieved in the catalysts processed by microwave irradiation for 3_10 min, which correlates well with the enhanced CH_3OH conversion as observed on the corresponding samples. The present work also confirms that although the high specific surface area of Cu is a prerequisite for catalytic activity, it does not account for the observed changes in activity and selectivity alone without taking bulk microstructural changes into account.

关 键 词：甲醇水蒸汽重整 Cu/ZnO/Al2O3催化剂 微波辐照 微观应变 原位XRD 

分 类 号：O641[理学—物理化学]