物理化学学报 >> 1995, Vol. 11 >> Issue (03): 283-286.doi: 10.3866/PKU.WHXB19950320

研究简报 上一篇    

CO2化学利用的一条新途径

范业梅, 徐恒泳, 史克英, 商永臣, 叶青, 徐国林, 黄仁才, 郭伟松, 周佩珩   

  1. 哈尔滨师范大学化学系|哈尔滨 150080|上海石油化工股份有限公司化工二厂研究所|上海 200540
  • 收稿日期:1994-08-23 修回日期:1994-12-06 发布日期:1995-03-15
  • 通讯作者: 徐恒泳

A New Route for the Chemical Utilization of CO2

Fan Ye-Mei, Xu Heng-Yong, Shi Ke-Ying, Shang Yong-Chen, Ye Qing, Xu Guo-Lin, Huang Ren-Cai, Guo Wei-Song, Zhou Pei-Heng   

  1. Department of Chemistry,Harbin Normal University,Harbin 150080|Research Institute of NO.2 Chemical Factory,Shanghai Petrochemical Co.LTD,Shanghai 200540
  • Received:1994-08-23 Revised:1994-12-06 Published:1995-03-15
  • Contact: Xu Heng-Yong

关键词: CO2化学利用, 合成气制备, 催化反应

Abstract:

The catalytic activities of Ni-5 and Ni-5-RM catalysts for reducing CO2 with CH4 or natural gas to produce synthesis gas have been studied by using a fixed-bed flow apparatus. It is found that the Ni-5RM catalyst not only has higher activity and selectivity due to higher dispersion of nickel, but also has better resistance to carbon deposition. It has been shown that a Ni-5-RM catalyst was not deactivated at all during 240h on a stream with CO2/CH4 ratio of 2.4:1 at 750℃ or 1.4:1 at 850℃. For the reduction of CO2 with natural gas, an important question is how to prevent the reaction system from carbon deposition. The experimental results indicate that addition of carboneliminator A into the raw material gases not only prevent carbon deposition, but also has no influence on the activity and selectivity. By adding carboneliminator A to a mixture of natural gas (containing 87% CH4) and CO2 a Ni-5-RM catalyst was not deactivated at all during 300h on a stream with CO2/natural gas ratio of 2.4:1 at 750℃ or 1.4:1 at 850℃. At conditions of 850℃ and CO2/natural gas =1.4:1, the contents of (CO+H2) have been reached to 96% (molar fraction). These results indicate that Ni-5-RM catalyst has a high activity, selectivity and stability for reducing CO2 with natural gas. Experiments magnified 500 times were carried out under the same conditions. The contents of synthesis gas obtained have been kept at 94~96%. These results first established the possibility of industrial utilization of the reduction of CO2 with natural gas to produce synthesis gas rich in carbon monoxide.

Key words: Chemical utilization CO2, Preparation of synthesis gas, Catalytic reaction