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| Research advances in clay modified by bis-quaternary ammonium salt with short-chain |
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GAO Mang-lai, SUN Li-min, LI Xiao-yan
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(State Key Laboratory of Heavy Oil Processing in China University of Petroleum，Beijing 102249, China)
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| Abstract: |
| The researches of clay modified by alkyl ammonium salts attracted the scholars' wide attention in China and abroad in recent years. The development and application of bis-quaternary ammonium salts opened a new way for the preparation and the property research of modified clays. The adsorption, swellability, stability, wettability and catalytic activity of the clays modified by bis-quaternary ammonium salt with short-chain and their composites were reviewed. The following are the developing trend of the basic research in this field : the microstructural changes of the organoclays，the type of combined water and boundary of hydration in clay swelling process as well as the hydration mechanism of combined water interacting with organo- |
| Key words: bis-quatemary ammonium salt with short-chain modified clay adsorption property advances |
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