Sr改性Cu催化剂的果糖加氢制备甘露醇性能

胡凤腾; 姚建龙; 李小青; 李思汉; 严新焕

doi:10.11949/j.issn.0438-1157.20181006

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Sr改性Cu催化剂的果糖加氢制备甘露醇性能

催化、动力学与反应器 | 更新时间：2026-07-24

- Sr改性Cu催化剂的果糖加氢制备甘露醇性能
- Properties of Sr modified Cu-based catalysts for hydrogenation of fructose to mannitol
- 化工学报 2019年70卷第4期页码：1420-1428
- 作者机构：
  
  浙江工业大学绿色化学合成技术国家重点实验室培育基地，浙江杭州 310014
- 作者简介：
  
  胡凤腾(1992—)，男，硕士研究生，1259896575@qq.com
  严新焕 (1964—)，男，博士，教授，xhyan@zjut.edu.cn
- 基金信息：
- DOI：10.11949/j.issn.0438-1157.20181006
  中图分类号： O 643.38
- 收稿：2018-09-10，
  
  修回：2019-01-23，
  
  网络首发：2020-06-15，
  
  纸质出版：2019-04-12
- 稿件说明：
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胡凤腾, 姚建龙, 李小青, 李思汉, 严新焕. Sr改性Cu催化剂的果糖加氢制备甘露醇性能[J]. 化工学报, 2019, 70(4): 1420-1428

HU Fengteng, YAO Jianlong, LI Xiaoqing, LI Sihan, YAN Xinhuan. Properties of Sr modified Cu-based catalysts for hydrogenation of fructose to mannitol[J]. CIESC Journal, 2019, 70(4): 1420-1428
胡凤腾, 姚建龙, 李小青, 李思汉, 严新焕. Sr改性Cu催化剂的果糖加氢制备甘露醇性能[J]. 化工学报, 2019, 70(4): 1420-1428 DOI： 10.11949/j.issn.0438-1157.20181006.

HU Fengteng, YAO Jianlong, LI Xiaoqing, LI Sihan, YAN Xinhuan. Properties of Sr modified Cu-based catalysts for hydrogenation of fructose to mannitol[J]. CIESC Journal, 2019, 70(4): 1420-1428 DOI： 10.11949/j.issn.0438-1157.20181006.

摘要

使用共沉淀法制备负载Cu催化剂。通过添加碱土金属Sr，对Cu催化剂进行了改性，以提高Cu催化剂在果糖加氢制备甘露醇过程中的活性和选择性。采用ICP-MS、TEM、XRD、H

-TPR、XPS和CO

-TPD等对所制备的催化剂进行了系统表征。结果表明：Sr的添加能增大催化剂的比表面积，促进活性组分Cu的分散，从而提高了催化剂的活性，并且增加了催化剂的碱性，使果糖优先形成

-呋喃糖中间体，从而提高了甘露醇的选择性。在果糖浓度为1.1 mol·L

-1

、催化剂用量为反应物质量的6%、反应温度为373 K、反应氢压为4.0 MPa、Cu/Sr原子比为7∶1的反应条件下，果糖转化率为99%，甘露醇的选择性为79%。催化剂循环使用了20次，其催化稳定性基本保持不变。

Abstract

A supported Cu catalyst was prepared by using a co-precipitation method. The Cu catalyst was modified by adding alkaline earth metal strontium to improve the activity and selectivity for the hydrogena

tion of fructose to prepare mannitol. Systematic characterizations

with ICP-MS

XRD

TEM

-TPR

XPS and CO

-TPD

showed that the increase catalytic activity of the catalyst is due to the fact that the formation of SrCO

formed on the surface of the support can increase the specific surface area of the catalyst and improve the dispersion of the copper species. In addition

the medium-strong basic sites formed on the surface of SrCO

can activate the carbonyl group into

-furanose which can be easily hydrogenated into mannitol. Fructose conversion of around 100% and mannitol selectivity of 79% were achieved in the conditions of 1.1 mol·L

-1

fructose concentration

catalyst dosage of 6% of reactant quality

reaction temperature of 373 K

hydrogen pressure of 4.0 MPa and Cu/Sr atomic ratio of 7∶1. The excellent stability of the Cu-Sr/SiO

catalyst remained basically unchanged after recycling for 20 times.

关键词

Keywords

references

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