Study on preparation of Ag-ZrO<sub>2</sub>-SiO<sub>2</sub> catalysts by co-precipitation and their performances in ethanol-to-butadiene

LIU Mengmeng; YU Gan; JIA Boyang; HUANG Mingzhen; CUI Yanran; CHEN Yasong

doi:10.12434/j.issn.2097-2547.20250224

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Study on preparation of Ag-ZrO₂-SiO₂ catalysts by co-precipitation and their performances in ethanol-to-butadiene

更新时间：2026-05-22

- Study on preparation of Ag-ZrO₂-SiO₂ catalysts by co-precipitation and their performances in ethanol-to-butadiene
- Vol. 51, Issue 5, Pages: 61-67(2026)
- 作者机构：
  
  1.中国长江三峡集团有限公司，湖北武汉 430010
  2.浙江大学生物系统工程与食品科学学院，浙江杭州 310058
  3.浙江大学衢州研究院，浙江衢州 324000
- 作者简介：
- 基金信息：
- DOI：10.12434/j.issn.2097-2547.20250224
  CLC： TQ426.8;O643.36+1
- Received：14 May 2025，
  
  Revised：2025-06-15，
  
  Published：25 May 2026
- 稿件说明：
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柳蒙蒙,余淦,贾伯阳等.共沉淀法制备Ag-ZrO₂-SiO₂催化剂及其乙醇制丁二烯性能研究[J].低碳化学与化工,2026,51(5):61-67.

LIU Mengmeng,YU Gan,JIA Boyang,et al.Study on preparation of Ag-ZrO₂-SiO₂ catalysts by co-precipitation and their performances in ethanol-to-butadiene[J].Low-Carbon Chemistry and Chemical Engineering,2026,51(5):61-67.
柳蒙蒙,余淦,贾伯阳等.共沉淀法制备Ag-ZrO₂-SiO₂催化剂及其乙醇制丁二烯性能研究[J].低碳化学与化工,2026,51(5):61-67. DOI： 10.12434/j.issn.2097-2547.20250224.

LIU Mengmeng,YU Gan,JIA Boyang,et al.Study on preparation of Ag-ZrO₂-SiO₂ catalysts by co-precipitation and their performances in ethanol-to-butadiene[J].Low-Carbon Chemistry and Chemical Engineering,2026,51(5):61-67. DOI： 10.12434/j.issn.2097-2547.20250224.

摘要

开发新型乙醇制丁二烯催化剂是实现传统丁二烯生产路线替代的关键。采用共沉淀法，通过调控Zr前驱体浓度，制备了系列Ag-ZrO

-SiO

催化剂。利用XRD、SEM、N

吸/脱附、ICP-OES和Py-IR等手段，对催化剂进行了表征，并利用固定床反应器评价了催化剂乙醇制丁二烯催化性能，探究了酸性调控对催化剂催化性能的影响。结果表明，通过调控Zr前驱体浓度，优化催化剂Lewis酸量及其强度分布，可以促进乙醛C—C耦合主反应，同时抑制乙醇脱水生成乙烯等副反应。在温度为420 ℃、重时空速为0.3 h

-1

的反应条件下，AZS-2催化剂（制备过程ZrO(NO

)

溶液质量分数为10%）具有最佳催化性能，其乙醇转化率为80.0%，丁二烯选择性为47.3%，乙烯选择性显著低于其他催化剂。

Abstract

Developing novel ethanol-to-butadiene catalysts is essential for enabling alternatives to the traditional butadiene production route. A series of Ag-ZrO

-SiO

catalysts were prepared using co-precipitation method

in which the Zr precursor concentration was controlled. The catalysts were characterized by XRD

SEM

adsorption/desorption

ICP-OES and Py-IR. Their catalytic performances in ethanol-to-butadiene were evaluated in a fixed-bed reactor to investigate the influence of acidity regulation on catalytic performance. The results show that controlling the Zr precursor concentration optimizes both the amount and strength distribution of Lewis acid sites

which promotes the main C—C coupling reaction of acetaldehyde while suppressing the side reaction of ethanol dehydration to ethylene. Under reaction conditions of 420 ℃ and weight hourly space velocity of 0.3 h

-1

the AZS-2 catalyst (prepared by ZrO(NO

)

solution with mass fraction of 10%) exhibits the best catalytic performance

achieving an ethanol conversion rate of 80.0% and a butadiene selectivity of 47.3%. Its ethylene selectivity is notably lower than that of other catalysts.

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Keywords

references

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Study on preparation of Ag-ZrO2-SiO2 catalysts by co-precipitation and their performances in ethanol-to-butadiene

DOI：10.12434/j.issn.2097-2547.20250224

摘要

Abstract

关键词

Keywords

references

Study on preparation of Ag-ZrO₂-SiO₂ catalysts by co-precipitation and their performances in ethanol-to-butadiene