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.
出处
《高等学校化学学报》
SCIE
EI
CAS
CSCD
北大核心
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.
