微波辐照促进的甲醇水蒸汽重整制氢Cu/ZnO/Al2O3催化剂

微波介电加热具有高效和节能等特点，近年来利用其独特的“体相加热”效应制备结构特异及性能优越的催化材料在多相催化领域中已引起关注，本文报道微波辐照处理对传统Cu／ZnO／Al2O3催化剂在甲醇水蒸汽重整制氢反应中的促进作用，研究结果表明，微波辐照处理对传统Cu／ZnO／Al2O3催化剂的微结构性质具有调控作用，可大大改善其低温催化活性及制氢选择性。

Microwave-irradiation Promoted Cu/ZnO/Al2O3 Catalyst for Hydrogen Production from Steam Reforming of Methanol

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.