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[1]刘欢,陈长林.Pt/WO3/ZrO2催化四氢糠醇氢解反应的失活研究[J].南京工业大学学报(自然科学版),2018,40(06):7-12.[doi:10.3969/j.issn.1671-7627.2018.06.002]
 LIU Huan,CHEN Changlin.Deactivation of Pt/WO3/ZrO2 in catalytic hydrogenolysis of tetrahydrofurfuryl alcohol[J].Journal of NANJING TECH UNIVERSITY(NATURAL SCIENCE EDITION),2018,40(06):7-12.[doi:10.3969/j.issn.1671-7627.2018.06.002]
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Pt/WO3/ZrO2催化四氢糠醇氢解反应的失活研究()
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《南京工业大学学报(自然科学版)》[ISSN:1671-7627/CN:32-1670/N]

卷:
40
期数:
2018年06期
页码:
7-12
栏目:
出版日期:
2018-11-20

文章信息/Info

Title:
Deactivation of Pt/WO3/ZrO2 in catalytic hydrogenolysis of tetrahydrofurfuryl alcohol
文章编号:
1671-7627(2018)06-0007-06
作者:
刘欢陈长林
南京工业大学 化工学院 材料化学工程国家重点实验室,江苏 南京 210009
Author(s):
LIU HuanCHEN Changlin
State Key Laboratory of Materials-Oriented Chemical Engineering,College of Chemical Engineering,Nanjing Tech University,Nanjing 210009,China
关键词:
活性组分流失 四氢糠醇 15-戊二醇 钨锆复合氧化物 催化剂失活
Keywords:
leaching of active components tetrahydrofurfuryl alcohol 15-pentanediol tungsten and zirconium mixed oxides catalyst deactivation
分类号:
O643
DOI:
10.3969/j.issn.1671-7627.2018.06.002
文献标志码:
A
摘要:
通过分步浸渍-焙烧法制备得到一种铂钨锆复合氧化物(Pt/WO3/ZrO2)催化剂,通过连续流动固定床反应器考察该催化剂催化不同水含量的四氢糠醇(THFA)溶液氢解反应的活性与稳定性。反应前后的催化剂采用N2物理吸附-脱附、X线衍射(XRD)和NH3程序升温脱附等技术进行表征,用电感耦合等离子体发射光谱仪(ICP-AES)测量反应余液中的W元素流失量。结果表明:当反应液中水质量分数从20%增加至80%时,四氢糠醇氢解转化率翻了一倍,高达到88.3%; 过多的水会降低催化剂的稳定性,当反应液中水质量分数为80%时,四氢糠醇转化率在150 h内下降了75%。铂钨锆复合氧化物催化剂氢解反应过程中存在W流失,水质量分数为80%时达到最大流失量(9.832 4×10-5); 当反应液pH=7.5、还原温度200 ℃时,反应余液的W流失量(6.881×10-6)最小。
Abstract:
A series of Pt/WO3/ZrO2 catalysts were prepared via the method of stepwise impregnation-calcinations.The evaluation of hydrogenolysis activity and stability of Pt/WO3/ZrO2 catalysts in tetrahydrofurfuryl alcohol(THFA)solution with different water content was studied in a fixed-bed continuous flow reactor.The physico-chemical properties of the catalysts before and after reaction were characterized by various techniques such as N2-physical adsorption-desorption,X-ray diffraction(XRD)and NH3-temperature programmed desorption.In addition,the leaching of active components in reaction residues were studied by inductively coupled plasma atomic emission spectrometer(ICP-AES).Results showed that when the water content of the reaction solution increased from 20% to 80%,the conversion of tetrahydrofurfuryl alcohol on the catalyst doubled to 88.3%,but too much water content would reduce the stability of the catalyst.In the reaction solution water content of 80%,the conversion of tetrahydrofurfuryl alcohol decreased 75%within 150 h.There was W leaching from Pt/WO3/ZrO2 catalyst during hydrogenolysis process,and the maximum leaching was 9.832 4×10-5 in water content of 80%.The amount of W lost in the reaction solution at pH=7.5,and the reduction temperature of 200 ℃was the smallest of 6.881×10-6.

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备注/Memo

备注/Memo:
收稿日期:2017-06-25
基金项目:江苏省产学研前瞻性研究项目(BY2015005-08)
作者简介:刘欢(1990—),男,安徽芜湖人,硕士,主要研究方向为工业催化; 陈长林(联系人),教授,E-mail:clchen@njtech.edu.cn.
引用本文:刘欢,陈长林.Pt/WO3/ZrO2催化四氢糠醇氢解反应的失活研究[J].南京工业大学学报(自然科学版),2018,40(6):7-12..
更新日期/Last Update: 2018-11-30