Reaction behavior of calcium carbide with alcohols

LIU Qing; LIU Qingya; WANG Renxing; XU Tao; LIU Zhenyu

doi:10.3969/j.issn.0438-1157.2013.07.036

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Reaction behavior of calcium carbide with alcohols

更新时间：2025-12-10

- Reaction behavior of calcium carbide with alcohols
- CIESC Journal Issue 7, Pages: 2573-2579(2013)
- 作者机构：
  
  北京化工大学化工资源有效利用国家重点实验室,北京,100029
- 作者简介：
- 基金信息：
- DOI：10.3969/j.issn.0438-1157.2013.07.036
  CLC： Q530.2
- Online First：05 July 2013，
  
  Published：05 July 2013
- 稿件说明：
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LIU Qing, LIU Qingya, WANG Renxing, et al. Reaction behavior of calcium carbide with alcohols[J]. CIESC Journal, 2013, (7): 2573-2579.
DOI：

LIU Qing, LIU Qingya, WANG Renxing, et al. Reaction behavior of calcium carbide with alcohols[J]. CIESC Journal, 2013, (7): 2573-2579. DOI： 10.3969/j.issn.0438-1157.2013.07.036.

摘要

在高压釜中研究了电石与甲醇、乙醇和异丙醇的反应行为及反应温度、反应时间和催化剂对产物的影响

通过设计对比实验

探索了电石与醇的反应途径。结果表明

电石与醇的反应产物包括乙炔、乙烯基醚、醇钙和醇钙分解产生的醇。乙烯基醚的生成途径除了文献报道的电石与醇的直接反应外

还包括电石与醇反应生成醇钙和乙炔、乙炔再与醇反应形成乙烯基醚的两步机理。

Abstract

Calcium carbide is a major coal-derived platform chemical with annual production of more than 15 Mt in China alone.It is used to generate acetylene

upon reacting with water

to start production of many commodity chemicals

such as vinyl chloride and vinyl acetic acid.Reactions of calcium carbide with alcohols were reported decades ago but received little attention.With the production of low cost alcohols from coal

natural gas as well as biomass

these reactions may become more important in the future.In this paper

reactions of calcium carbide individually with three alcohols

methanol

ethanol and isopropanol

at various temperatures and time in the presence and absence of a catalyst were studied batch-wise in a stirred autoclave.The products were analyzed with gas chromatography

mass spectroscopy

X-ray diffraction and infrared spectroscopy.The products mainly included acetylene

vinyl ethers

calcium alkoxides

and higher alcohols from decomposition of calcium alkoxides.One of the reaction pathway involved formation of acetylene and calcium alkoxides in the first step

reaction of acetylene with alcohols to produce vinyl ethers in the second step

and decomposition of calcium alkoxides to higher alcohols.

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