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二甲醚催化氧化制下游化学品(Ⅱ) V/Mn改性的SnO2/MgO催化氧化制碳氢化合物
Catalytic oxidation of dimethyl ether to downstream products (Ⅱ) Over V or Mn modified SnO2/MgO catalysts
【摘要】 考察了SnO2/MgO催化剂和添加助剂V、Mn对二甲醚(DME)催化氧化制取乙二醇二甲醚(DMET)和其他碳氢化合物的催化性能。结果表明,锡镁催化剂对DME在275~325℃有良好的催化活性;添加VOx能较大提高DME转化率和产物DMET的选择性,DME转化率可达23%,DMET选择性可达44%,在300℃收率达9%以上。
【Abstract】 Selective oxidation of dimethyl ether (DME) to dimethoxyethane (DMET) and other hydrocarbons over SnO2/MgO and V or Mn modified catalysts was investigated.It was found that all the catalysts were active for the reaction in the temperature range of 275—325℃.DME conversion and the selectivity of DMET increased when adding V or Mn to the SnO2/MgO catalyst.The selectivity of DMET reached 44% at a DME conversion of 23% on VOx/SnO2/MgO catalyst,which is higher than those of SnO2/MgO or Mn modified SnO2/MgO catalysts.
【关键词】 二甲醚;
乙二醇二甲醚;
MgO;
SnO2;
催化氧化;
【Key words】 dimethyl ether; dimethoxyethane; MgO; SnO2; catalytic oxidation;
【Key words】 dimethyl ether; dimethoxyethane; MgO; SnO2; catalytic oxidation;
【基金】 广东省自然科学基金项目(4205301,06021468);广东省科技计划项目(2004B33401003,2005B10201053);广州市科技计划项目(2006J1-C0501);国家自然科学基金项目(20203012)~~
- 【文献出处】 化工学报 ,Journal of Chemical Industry and Engineering(China) , 编辑部邮箱 ,2007年04期
- 【分类号】O643.3
- 【被引频次】6
- 【下载频次】156