二甲基十二烷基烯丙基氯化铵的合成、防膨性能及机理  

Synthesis,Clay Anti-swelling Property and Mechanism of Dimethyl Dodecyl Allyl Ammonium Chloride

作　　者：郭兴午 梁爽 肖勇军 都伟超 GUO Xing-wu;LIANG Shuang;XIAO Yong-jun;DU Wei-chao(Shale Gas Research Institute,PetroChina Southwest Oil ＆ Gas Field Compa-ny,Chengdu 610021,China;Central Sichuan Oil ＆ Gas Field District,PetroChina Southwest Oil ＆ Gas Field Company,Suining 629000,China;Sichuan Changning Gas Development Co.,Ltd.,Chengdu 610000,China;College of Chemistry and Chemical Engineering,Xi＇an Shiyou University,Xi＇an 710065,China)

机构地区：[1]中国石油西南油气田页岩气研究院,四川成都610021 [2]中国石油西南油气田川中油气矿,四川遂宁629000 [3]四川长宁天然气开发有限责任公司,四川成都610000 [4]西安石油大学化学化工学院,陕西西安710065

出　　处：《化学试剂》2018年第11期1098-1101,共4页Chemical Reagents

基　　金：陕西省2018年大学生创新创业训练计划项目(201819085);有色金属成矿预测与地质环境监测教育部重点实验室(中南大学)开放基金资助项目(2018YSJS06)

摘　　要：为保护油气储层,以二甲胺、氯代十二烷、烯丙基氯为原料,开发出一种表面活性剂型烯类阳离子粘土（Na-MMT）防膨剂：二甲基十二烷基烯丙基氯化铵（DDAAC）。采用正交试验确定了产物的最优合成方案,该方案为：反应温度35℃;反应时间12 h; pH 9; n（二甲胺）∶n（氯代十二烷）∶n（烯丙基氯）=1. 6∶1. 0∶1. 6。当DDAAC加量为0. 5 wt%时,防膨率达68. 31%。采用XRD、FT-IR等手段对DDAAC防膨机理进行研究,XRD表明DDAAC可插层进入Na-MMT晶层间,0. 5 wt%的DDAAC可将干态Na-MMT晶层间距由1. 28 nm撑大至1. 57 nm,FT-IR表明DDAAC可与Na-MMT发生强烈吸附作用。In order to protect the oil gas reservoirs,a surfactant vinyl cationic clay（ Na-MMT） anti-swelling agent dimethyl dodecyl allyl ammonium chloride（ DDAAC） was prepared from dimethylamine,chlorododecane and allyl chloride as raw materials.The single-factor orthogonal test was used to determine the optimal synthesis scheme for DDAAC： reaction temperature 35 ℃; reaction time 12 h; pH 9; n（ dimethylamine） ∶ n（ chlorododecane） ∶ n（ allyl chloride） = 1. 6 ∶ 1. 0 ∶ 1. 6. The experimental results showed that the anti-expansion rate of 0. 5 wt% DDAAC can reach to 68. 31%.XRD and FT-IR were utilized to study its anti-expansion mechanism.XRD indicated that DDAAC could intercalate and enter the interlayer of Na-MMT,0. 5 wt% DDAAC could support the dry Na-MMT layer spacing from 1. 28 nm to 1. 57 nm,FT-IR showed that physicochemical adsorption between DDAAC and Na-MMT occurs.

关 键 词：二甲基十二烷基烯丙基氯化铵 表面活性剂 季铵盐 粘土防膨剂 

分 类 号：O623.7[理学—有机化学]