CAJ | 학술논문

采用共沉淀法制备了一系列CuO-ZnO-Al2O3-ZrO2（CZAZ）催化剂，用于二氧化碳加氢合成甲醇。通过加入少量的助剂二氧化硅得到了一系列CZAZ/SiO2改性催化剂。采用XRD、BET、H2-TPR、NH3-TPD以及CO2-TPD等技术进行表征，研究了助剂二氧化硅含量对催化剂的物理化学性质以及组织结构的影响。结果表明，助剂二氧化硅的含量对催化剂的组织结构具有较大的影响。同时评价了该组催化剂参与二氧化碳加氢合成甲醇反应的催化性能。测试结果表明，采用助剂二氧化硅质量分数为4%的改性催化剂，表现出较为优良的催化活性。助剂二氧化硅促进了活性组分氧化铜的分散，并且经过二氧化硅改性的 CZAZ 催化剂具有更大的比表面积，这些因素都对该催化剂在二氧化碳加氢合成甲醇方面的良好表现起到重要作用。
채용공침정법제비료일계렬CuO-ZnO-Al2O3-ZrO2（CZAZ）최화제，용우이양화탄가경합성갑순。통과가입소량적조제이양화규득도료일계렬CZAZ/SiO2개성최화제。채용XRD、BET、H2-TPR、NH3-TPD이급CO2-TPD등기술진행표정，연구료조제이양화규함량대최화제적물이화학성질이급조직결구적영향。결과표명，조제이양화규적함량대최화제적조직결구구유교대적영향。동시평개료해조최화제삼여이양화탄가경합성갑순반응적최화성능。측시결과표명，채용조제이양화규질량분수위4%적개성최화제，표현출교위우량적최화활성。조제이양화규촉진료활성조분양화동적분산，병차경과이양화규개성적 CZAZ 최화제구유경대적비표면적，저사인소도대해최화제재이양화탄가경합성갑순방면적량호표현기도중요작용。
Various CuO-ZnO-Al2O3-ZrO2(CZAZ) catalysts for methanol synthesis from CO2 hydrogenation were prepared by theco-precipitation method. A small amount of silica was incorporated into CZZ catalyst to produce these modified ternary CZAZ catalysts. The effects of silica on physicochemical and catalytic properties were studied with XRD,BET,H2-TPR,NH3-TPD and CO2-TPD. The properties of catalysts were strongly influenced by the content of SiO2 used as promoter. The catalytic performance for methanol synthesis from CO2 hydrogenation was evaluated. CZAZ catalyst modified with 4% SiO2 exhibited optimum catalytic activity. Silica improved dispersion of CuO and its modified CZAZ catalysts exhibited higher specific surface area,which were confirmed to be responsible for excellent performance for methanol synthesis from CO2 hydrogenation.