摘要
采用浸渍法制备了负载在废轮胎热解炭(PTC)上的三金属体系催化剂(1Pt-1Co)-xLa,其中,Pt的负载量为0.2%,Pt-Co原子比为1∶1,La以不同原子比加入。N2吸脱附、H2-TPR、CO脉冲吸附对催化剂表征的结果表明,适量La的加入有利于提高活性组分的分散度,促进活性组分的还原,尤其是对Pt-Co的共还原作用具有一定的促进作用。催化甲基环己烷(MCH)脱氢反应的结果表明,La的加入显著提高了单、双金属催化剂的活性。
In the present work, the Pt-Co-La catalysts supported on pyrolytic waste tire char （PTC） were prepared by impregnation method. The loading of Pt is 0.2% , Pt-Co-La atomic ratio is 1：1 ：x （x = 1- 4）. The characterization of N2 adsorption-desorption, H2-TPR and pulse CO chemisorption results showed that the addition of a moderate amount of La to the Pt-Co bimetallic catalyst was beneficial to reduce Pt and Co, and improve their dispersion. The activity of the catalysts for dehydrogenation of methyl- eyclohexane（MCH） at 300 ℃ was investigated. The results suggest that trimetallic catalysts 1Pt-1CoxLa/PTC （x = 1-3） exhibited the high activity, compared with Pt, Pt-Co and Pt-La supported on PTC.
出处
《化学工业与工程》
CAS
2014年第1期19-23,共5页
Chemical Industry and Engineering
基金
国家自然科学基金青年科学基金项目(No.21003077)
关键词
甲基环己烷
脱氢
铂-钴-镧
废轮胎热解炭
methylcyclohexane
dehydrogenation
platinum-cobah-lanthanum
pyrolytic waste tire char （ PTC ）
