Synthesis and Clay Anti-Swelling Properties of Diethyl Dodecyl Allyl Ammonium Chloride

Abstract:

In order to protect the oil&gas reservoirs, a surfactant vinyl cationic clay (Na-MMT) anti-swelling agent diethyl dodecyl allyl ammonium chloride (DDAAC) was prepared from diethylamine, chlorododecane and allyl chloride as raw materials. The single-factor orthogonal test was used to determine the optimal synthesis scheme for DDAAC: reaction temperature 40 °C; reaction time 4 h; pH= 9; n (diethylamine): n(chlorododecane): n(allyl chloride) = 1.1:1.0:1.8. The experimental results showed that the anti-expansion rate of 0.5wt% DDAAC can reach to 78.31%. FT-IR were utilized to study its anti-expansion mechanism, and FT-IR showed that physicochemical adsorption between DDAAC and Na-MMT occurs.

• Periodical: Key Engineering Materials (Volume 814)
• Pages: 297-301
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.814.297
• Online since: July 2019
• Authors: Yu Liang Ma, Rui Jie Xie*, Huan Zheng, Chan Zhu
• Keywords: Ammonium Chloride, Clay Anti-Swelling Agent, Reservoir Protection, Shale Gas

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