Preparation of ethyl levulinate from cellulose catalyzed by dealuminated USY molecular sieves supporting copper

AN Ran; KONG Pengfei; XU Guizhuan; CHANG Chun; BAI Jing; FANG Shuqi

doi:10.11949/j.issn.0438-1157.20160699

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Preparation of ethyl levulinate from cellulose catalyzed by dealuminated USY molecular sieves supporting copper

更新时间：2025-12-10

- Preparation of ethyl levulinate from cellulose catalyzed by dealuminated USY molecular sieves supporting copper
- CIESC Journal Issue 11, Pages: 4643-4651(2016)
- 作者机构：
  
  1. 郑州大学化工与能源学院,河南,郑州,450001
  2. 河南农业大学机电工程学院,河南,郑州,450002
- 作者简介：
- 基金信息：
- DOI：10.11949/j.issn.0438-1157.20160699
  CLC： Q426.95
- Online First：05 November 2016，
  
  Published：05 November 2016
- 稿件说明：
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AN Ran, KONG Pengfei, XU Guizhuan, et al. Preparation of ethyl levulinate from cellulose catalyzed by dealuminated USY molecular sieves supporting copper[J]. CIESC Journal, 2016, (11): 4643-4651.
DOI：

AN Ran, KONG Pengfei, XU Guizhuan, et al. Preparation of ethyl levulinate from cellulose catalyzed by dealuminated USY molecular sieves supporting copper[J]. CIESC Journal, 2016, (11): 4643-4651. DOI： 10.11949/j.issn.0438-1157.20160699.

摘要

以非缓冲体系下柠檬酸脱铝改性的USY分子筛为载体，铜为金属活性组分，采用浸渍法制备脱铝超稳Y沸石负载Cu。考察了该催化剂对纤维素醇解制备乙酰丙酸乙酯（EL）的催化活性。在反应温度为200℃、反应时间为3 h的条件下，催化纤维素转化生成EL的产率为48.2%。通过XRD、FT-IR、BET、NH3-TPD、Py-IR和TG-DTA对催化剂进行表征，结果表明，Cu-DUSY催化剂热稳定性好，晶体结构稳定。Cu-DUSY回收利用4次EL产率仍可保持40%以上，具有较好的催化活性。

Abstract

A dealuminated Y molecular sieves supporting copper (Cu-DUSY) catalyst was prepared by impregnation technique using Cu as metallic active ingredient and modified USY molecular sieves as carrier

which USY modification was dealuminated in non-buffered citric acid. Physicochemical characterization by XRD

FT-IR

BET

NH3-TPD

Py-IR and TG-DTA showed that the Cu-DUSY catalyst had excellent thermal stability and steady crystal structure. Cellulose alcoholysis catalyzed by Cu-DUSY yielded 48.2%(mol) of ethyl levulinate (EL) at 200℃ for 3 h. The recycled Cu-DUSY catalyst remained high activity with EL yield above 40%(mol) after being used four times.

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