催化剂表面酸性的改性对甲烷二氧化碳干重整反应的影响  

Effect of surface acidity modification on CH_(4)-CO_(2) dry reforming

作　　者：杨延涛[1] 杨树华[1] 黄伟庆[2] 石杰[1] 吴艺峰 岳增合[1] 赵宝珠[1] 雷廷宙[1] Yang Yantao;Yang Shuhua;Huang Weiqing;Shi Jie;Wu Yifeng;YueZenghe;Zhao Baozhu;Lei Tingzhou(Henan Academy of Sciences,Zhengzhou 450002,China;1nstitute of Chemistry Co.,Ltd.,Henan Academy of Sciences,Zhengzhou 450002,China)

机构地区：[1]河南省科学院,河南郑州450002 [2]河南省科学院化学研究所有限公司,河南郑州450002

出　　处：《可再生能源》2021年第5期576-581,共6页Renewable Energy Resources

基　　金：国家重点研发计划项目(2019YFB1503903);河南省科学院基本科研项目(200606036)。

摘　　要：文章以堇青石为载体,采取等体积浸渍法负载Ni,Co和Zr等活性金属组分对催化剂表面酸性进行改性,并研究了改性催化剂在CH_(4)-CO_(2)干重整反应中的催化反应性能。研究结果表明:在反应温度为750℃,压力为1.01×10^(5)Pa,以Ni-Co-Zr/C为催化剂的条件下,CH_(4)-CO_(2)干重整反应中的CH_(4)转化率为76.2%,CO2转化率为83.9%,产物中H_(2)/CO的比值为0.88;催化剂表面酸性的改变有利于提升催化剂的活化性能和抗积碳性能。In this paper,cordierite was used as the carrier,active metal components such as Ni,Co,and Zr were loaded by equal volume impregnation method to modify the surface acidity of the catalyst,and the catalytic performance of the modified catalyst for CH_(4)-CO_(2)dry reforming was investigated.The results showed that with catalysis of Ni-Co-Zr/C,the conversion of CH_(4)and CO_(2)were 76.2%and83.9%,respectively,and the ratio of H_(2)/CO in the product was 0.88 in CH_(4)-CO_(2)dry reforming reaction with a temperature of 750℃and pressure of 1.01×10^(5)Pa.Moreover,the change of catalyst surface acidity was beneficial to improve the activation performance and carbon deposition resistance of the catalyst.

关 键 词：甲烷 干重整 堇青石 积碳 强酸位 

分 类 号：TK6[动力工程及工程热物理—生物能]