INTRINSIC KINETICS OF CATALYTIC HYDROGENATION OF ROSIN ON RANEY NICKEL

CHEN Xiaopeng; WANG Linlin; YANG Chengli; DUAN Wengui

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INTRINSIC KINETICS OF CATALYTIC HYDROGENATION OF ROSIN ON RANEY NICKEL

更新时间：2025-12-10

- INTRINSIC KINETICS OF CATALYTIC HYDROGENATION OF ROSIN ON RANEY NICKEL
- CIESC Journal Issue 5, (2002)
- 作者机构：
  
  广西大学化学化工学院
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Online First：25 May 2002，
  
  Published：25 May 2002
- 稿件说明：
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CHEN Xiaopeng, WANG Linlin, YANG Chengli, et al. INTRINSIC KINETICS OF CATALYTIC HYDROGENATION OF ROSIN ON RANEY NICKEL[J]. CIESC Journal, 2002, (5).
DOI：

CHEN Xiaopeng, WANG Linlin, YANG Chengli, et al. INTRINSIC KINETICS OF CATALYTIC HYDROGENATION OF ROSIN ON RANEY NICKEL[J]. CIESC Journal, 2002, (5). DOI：

摘要

测定在不同类型搅拌器下高压釜的持气量和反应效果

认识到松香在Raney镍上催化加氢反应受到外扩散的严重影响

利用加入 2 0 0号溶剂油、改造搅拌器类型、提高搅拌速度的方法消除外扩散

使反应处于化学动力学控制区

然后采集动力学数据

经对 17种可能的反应机理模型进行筛选

推测的反应机理为 :松香中的主要成分枞酸分子不吸附

枞酸分子与催化剂表面上被吸附的氢原子进行反应

氢原子的吸附为控制步骤

据此导出其本征动力学方程 .

Abstract

The intrinsic kinetics of catalytic hydrogenation of rosin on Raney nickel was investigated at temperature 423 K to 453 K and under pressure 4 0 MPa to 7 0 MPa. Gas hold-up and reaction in autoclaves with different types of stirrers were determined. The result showed that the catalytic hydrogenation of rosin on Raney nickel is a reaction of external diffusion control. The external diffusion effect was eliminated by adding No 200 solvent oil

changing stirrer type and increasing rotational speed. Based on the experimental results

a suitable reaction model was selected from 17 probable reaction mechanism models

i e the main component abietic-acid in rosin is not absorbed and absorption of atomic hydrogen with reaction between atomically absorbed hydrogen on catalyst surface and abietic-acid could be the controlling step. The intrinsic kinetic equation was acquired. It is useful to provide a theoretical basis for the development of industrial process.

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