CIESC Journal ›› 2013, Vol. 64 ›› Issue (7): 2573-2579.doi: 10.3969/j.issn.0438-1157.2013.07.036

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Reaction behavior of calcium carbide with alcohols

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

  1. State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China
  • Received:2012-11-13 Revised:2013-03-25 Online:2013-07-05
  • Supported by:

    supported by the National Basic Research Program of China(2011CB201306)and the National Science Foundation of China (20976011).

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.

Key words: calcium carbide, alcohols, reaction steps, acetylene

CLC Number: 

  • TQ530.2
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