燃料化学学报（中英文）2024，Vol.52Issue(1)：38-46,9.DOI:10.1016/S1872-5813(23)60370-6
低钼锡比催化剂中钼的价态对甲醇氧化制甲缩醛反应性能的影响
Effect of molybdenum valence in low Mo/Sn ratio catalysts for the oxidation of methanol to dimethoxymethane
摘要
Abstract
A series of Mo/Sn(1∶20,molar ratio)catalysts were prepared by two-step hydrothermal synthesis method,and the effect of calcination temperature of tin precursors on the reaction performance of methanol oxidation to dimethoxymethane(DMM)was investigated.The crystal structure,surface properties,redox property and valence change of molybdenum species of the catalyst were characterized by XRD,Raman,FT-IR,XPS,NH3-TPD and H2-TPR.The results showed that Mo1Sn20-600℃Sn catalyst exhibited better performance than other catalysts,achieving DMM selectivity of 90％with methanol conversion of 30％at 140 ℃.From the characterization results,the surface properties of the tin precursors affected the structure of catalyst,the degree of molybdenum oxide dispersion and valence of molybdenum species,and further influenced the performance of the catalysts.The high temperature calcination of tin precursors is more favorable for the generation of Mo6+in the Mo1Sn20 catalyst.关键词
甲醇/低温氧化/甲缩醛/Mo1Sn20催化剂/Mo6+物种Key words
methanol/low temperature oxidation/dimethoxymethane/Mol Sn20 catalyst/Mo6+species分类
化学化工引用本文复制引用
王佳,高秀娟,宋法恩,张俊峰,王晓星,张涛,谭猗生,韩怡卓,张清德..低钼锡比催化剂中钼的价态对甲醇氧化制甲缩醛反应性能的影响[J].燃料化学学报（中英文）,2024,52(1):38-46,9.基金项目
The project was supported by the National Natural Science Foundation of China(22172187),the Central Guidance on Local Science and Technology Development Fund of Shanxi Province(YDZJSX2022A072),the Dalian National Laboratory For Clean Energy(DNL)Cooperation Fund,CAS(DNL 201903),and the Youth Innovation Promotion Association CAS(2014155).国家自然科学基金(22172187),山西省中央引导地方科技发展资金项目(YDZJSX2022A072),中国科学院洁净能源创新研究院合作基金(DNL201903)和中国科学院青年创新促进会人才项目(2014155)资助 （22172187）
