Ni-Co合金催化剂在CH_4-CO_2重整中的应用  

Application of Ni-Co alloy catalysts in CH_4-CO_2 reforming

作　　者：韩冰[1,2] 张桂华 邢闯 吕鹏[1,2] 吕成学[1,2] 杨瑞芹[1,2] 盖希坤[1,2] HAN Bing;ZHANG Gui-hua;XING Chuang;LU Peng;LU Cheng-xue;YANG Rui-qin;GAI Xi-kun(School of Biological and Chemical Engineering,Zhejiang University of Science & Technology,Hangzhou 310023,China;Zhejiang Provincial Key Lab.for Chem.& Bio.Processing Technology of Farm Products,Hangzhou 310023,China)

机构地区：[1]浙江科技学院生物与化学工程学院,浙江杭州310023 [2]浙江省农产品化学与生物加工技术重点实验室,浙江杭州310023

出　　处：《应用化工》2019年第1期131-135,共5页Applied Chemical Industry

基　　金：浙江省自然科学基金项目(LY17B060002);浙江省农产品化学与生物技术加工重点实验室开放基金项目(2013KF0307);浙江省生化制造协同创新中心开放基金项目(2016KF0017);浙江科技学院交叉预研项目(2015JC05Y)

摘　　要：采用等体积浸渍法制备了系列Ni-Co/γ-Al2O3合金催化剂,用于CH_4-CO_2重整反应,用固定床连续反应装置对催化剂进行了活性评价。结果表明,在还原温度900℃,Ni/Co摩尔比为1∶1～1∶1. 5时能较好地形成合金。Ni-Co合金的形成有助于提高催化剂在CH_4-CO_2重整反应中的活性和稳定性。当Ni/Co摩尔比为1∶1. 5时,CH_4、CO_2和总碳转化率达到最高,催化剂上积碳最少,反应50 h后不失活。A series of Ni-Co/γ-Al2 O3 alloy catalysts were prepared by the equal volume impregnation method,and used in the reforming reaction of CH4-CO2. The activity of the catalysts was measured by the fixed bed continuous reactions. The results show that the alloy could well be formed when the reduction temperature of 900 ℃ and the Ni/Co ratio is 1∶ 1 to 1∶ 1. 5. The formation of Ni-Co alloy can improve the activity and stability of catalyst in CH4-CO2 reforming reaction. The conversion of CH4,CO2 and total carbon was highest,and the amount of carbon deposition was least when the Ni/Co molar ratio of 1∶ 1. 5. The Ni-Co/γ-Al2 O3 alloy catalysts with Ni/Co molar ratio of 1 ∶ 1. 5 did not lose its life after the reforming reaction of CH4-CO2 for 50 h.

关 键 词：Ni-Co合金催化剂 CH4-CO2重整 等体积浸渍法 积碳 

分 类 号：TQ426.82[化学工程] O643.3[理学—物理化学]