Ru／Al_2O_3催化剂对CO_2加氢转化的研究  

Study on the Catalytically Hydrogenated Conversion of CO_2 Using Ru/Al_2O_3 Catalyst

作　　者：赵瑞兰[1] 彭美生[1] 马玉梅 张凤武[1] 

机构地区：[1]中国科学院生态环境研究中心

出　　处：《环境科学》1996年第2期23-25,共3页Environmental Science

基　　金：863高技术项目

摘　　要：给出了在Ｒｕ／Ａｌ２Ｏ３催化剂上采用不同的反应条件对ＣＯ２转化率及ＣＨ４生成率的影响。反应温度低于３５０℃时，ＣＯ２的转化率大于９５％，ＣＨ４的生成率约为４５％－７９％。空速的改变对ＣＯ２的转化率及水的生成率无显著影响，即空速在５０００—１００００ｈ（－１）内波动不大。但对ＣＨ４的生成率影响明显，在７０００—９０００ｈ（－１）间有一波谷；ＣＯ的生成量在５０００—９０００ｈ（－１）变化不大，在１００００ｈ（－１）有较大增加。富Ｈ２时，对ＣＯ２转化生成ＣＨ４有利，最佳生成率可达９８％。In this paper the catalytically hydrogenated conversion of CO2 was studied using Ru/Al2O3 catalyst, the influence of different reaction conditions, such as reaction temperature (260-520℃, 5000-10000 h-1) and CO2/H2 ratio in inlet gas, on CO2 conversion efficiency and CH4 formation were reported. At reaction temperature higher than 350℃ the CO2 conversion efficiency was over 95%, and CH4 formation rate was about 45 % - 79%. There was no significant influence on CO2 conversion efficiency and H2O formation when the space velocity from 5000 h-1 to 10000 h-1. However, for the CH4 formation efficiency there was a trough at the space velocity of 7000 - 9000 h-1.The CO formation changed a little at space velocity of 5000-9000 h-1, but it increased a lot at 10000 h-1. The higher CH4 formation efficiency was Obtained when there existed excess of H2. The highest CH4 formation efficiency obtained was 98%.

关 键 词：催化剂 催化加氢 甲烷 二氧化硫 

分 类 号：X131[环境科学与工程—环境科学]