Preparation of alumina composite ZSM-5 catalysts and their performances in hydration of cyclohexene to cyclohexanol

MA Zihao; HOU Chaopeng; LV Shuaishuai; LI Hongwei; GAO Yuhan; YANG Keyong; XU Run; XIA Guofu

doi:10.12434/j.issn.2097-2547.20250020

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Preparation of alumina composite ZSM-5 catalysts and their performances in hydration of cyclohexene to cyclohexanol

更新时间：2025-05-13

- Preparation of alumina composite ZSM-5 catalysts and their performances in hydration of cyclohexene to cyclohexanol
- Pages: 1-7(2025)
- 作者机构：
  
  中石化石油化工科学研究院有限公司，北京 100083
- 作者简介：
- 基金信息：
- DOI：10.12434/j.issn.2097-2547.20250020
  CLC： TQ13
- Received：15 January 2025，
  
  Revised：20 March 2025，
  
  Published Online：12 May 2025，
- 稿件说明：
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马子豪,侯朝鹏,吕帅帅等.氧化铝复合ZSM-5催化剂的制备及其环己烯水合制环己醇反应性能[J].低碳化学与化工,

MA Zihao,HOU Chaopeng,LV Shuaishuai,et al.Preparation of alumina composite ZSM-5 catalysts and their performances in hydration of cyclohexene to cyclohexanol[J].Low-Carbon Chemistry and Chemical Engineering,
马子豪,侯朝鹏,吕帅帅等.氧化铝复合ZSM-5催化剂的制备及其环己烯水合制环己醇反应性能[J].低碳化学与化工, DOI：10.12434/j.issn.2097-2547.20250020.

MA Zihao,HOU Chaopeng,LV Shuaishuai,et al.Preparation of alumina composite ZSM-5 catalysts and their performances in hydration of cyclohexene to cyclohexanol[J].Low-Carbon Chemistry and Chemical Engineering, DOI：10.12434/j.issn.2097-2547.20250020.

摘要

苯酚加氢法和环己烷氧化法等传统方法制环己醇存在能耗高、安全性差等问题。而环己烯水合法因环己醇选择性高、氢气消耗量低而受到广泛关注。然而，现有环己烯水合制环己醇催化剂（如ZS

M-5分子筛）在酸量调控过程中存在骨架结构易被破坏、酸性分布不均等问题。采用挤条成型法复合干胶粉（主要成分为拟薄水铝石）与ZSM-5分子筛，制得一系列环己烯水合制环己醇催化剂。通过XRD和N

物理吸/脱附等表征了催化剂的结构，并在固定床反应器上评价了催化剂的催化性能。结果表明，在温度为110 ℃、压力为0.1 MPa、N

流量为10 mL/min、空速为0.33 h

-1

和

(水):

(环己烯)为6:1的条件下反应1 h，催化剂Z4-4:1（

(ZSM-5):

(干胶粉)为4:1）表现出最优的催化性能，其环己烯转化率为8.2%，环己醇选择性为79.0%。在一定范围内增强酸性和增大酸量，均可强化催化剂的催化性能。

Abstract

Traditional methods for cyclohexanol production

such as phenol hydrogenation method and cyclohexane oxidation method

suffer from high energy consumptions and safety concerns. In contrast

the cyclohexene hydration method has attracted significant attention due to its high cyclohexanol selectivity and low hydrogen consumption. However

existing catalysts (such as ZSM-5 zeolite) for cyclohexene hydration to cyclohexanol face challenges including structural framework instabilities and uneven acid distributions during acid content regulation. A series of catalysts were prepared by compositing ZSM-5 zeolite with dry gel powder (primarily pseudo-boehmite) via extrusion molding. The structures of catalysts were characterized by XRD and N₂ physisorption-desorption

etc.

and their catalytic performances were evaluated in a fixed-bed reactor. The results show that reaction under optimized conditions of temperature of 110 °C

pressure of 0.1 MPa

N₂ flow rate of 10 mL/min

space velocity of 0.33 h

-1

and

(water):

(cyclohexene) of 6:1 for 1 h

catalyst Z4-4:1 (

(ZSM-5):

(dry gel powder) of 4:1) exhibits superior catalytic performance with cyclohexene conversion rate of 8.2% and cyclohexanol selectivity of 79.0%. The catalytic performance of catalyst can be enhanced by enhancing acid strength and increasing acid quantity within specific ranges.

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references

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