燃料化学学报2018，Vol.46Issue(6)：692-699,8.
硅源对蒸氨法制备Cu/SiO2催化剂催化甲醇裂解制氢的影响
Catalytic performance of methanol decomposition on Cu/SiO2 catalyst with different silica sources prepared with ammonia evaporation method
杜泽宇 1朱明 1包喆宇 2史大佑 1陈晓蓉 1许岩 1梅华1
作者信息
- 1. 南京工业大学 化工学院,江苏 南京 210009
- 2. 南京(诺盟化工)催化氢化工程技术研究中心,江苏 南京 210009
- 折叠
摘要
Abstract
Cu/SiO2catalysts were prepared via ammonia evaporation method, using fumed silica ( SiO2-aer) , silica gel (SiO2-gel) and alkaline silica sol (SiO2-sol) as the silica sources and their catalytic performance in methanol decomposition were investigated.The catalysts were characterized by N2adsorption-desorption, N2O chemisorption, inductively coupled plasma atomic emission spectroscopy ( ICP-AES ) , X-ray diffraction ( XRD) , H2temperature programmed reduction ( H2-TPR) , transmission electron microscope ( TEM) and X-ray photoelectron spectroscopy( XPS) .The results indicate that silica source can affect the decomposition activity of Cu/SiO2catalysts.The Cu/SiO2-sol catalyst prepared with alkaline silica sol exhibits larger surface area, smaller active site size and more uniform dispersion of Cu.Therefore, it gives Cu/SiO2-sol a better decomposition performance than other catalysts.Methanol conversion on Cu/SiO2-sol is 10% higher than that on Cu/SiO2-aer, and 7% higher than that on Cu/SiO2-gel.Additionally, byproducts concentration on Cu/SiO2-sol is considerably lower than other catalysts.Under the reaction conditions of 280 ℃, 1 MPa and 0.6 h-1of WHSV, methanol conversion of 98.4% and gas yield of 96.7% can be achieved.关键词
甲醇裂解/蒸氨法/Cu/SiO2催化剂Key words
methanol decomposition/ammonia evaporation method/Cu/SiO2 catalyst分类
化学化工引用本文复制引用
杜泽宇,朱明,包喆宇,史大佑,陈晓蓉,许岩,梅华..硅源对蒸氨法制备Cu/SiO2催化剂催化甲醇裂解制氢的影响[J].燃料化学学报,2018,46(6):692-699,8.
