描述了一系列邻苯二甲酸单烷基酰胺钠表面活性剂的合成,并报道了表面活性剂的表面活性。单烷基酰胺邻苯二甲酸是通过使用伯脂族胺(月桂基,肉豆蔻基,十六烷基)和邻苯二甲酸酐进行酰胺化合成的。它们通过IR,1 H NMR和MS进行结构表征。通过用氢氧化钠中和前体酸来制备单烷基酰胺邻苯二甲酸钠表面活性剂。它们的水的表面张力降低至30-38 MN米-1以10浓度水平-4摩尔大号-1。
描述了一系列邻苯二甲酸单烷基酰胺钠表面活性剂的合成,并报道了表面活性剂的表面活性。单烷基酰胺邻苯二甲酸是通过使用伯脂族胺(月桂基,肉豆蔻基,十六烷基)和邻苯二甲酸酐进行酰胺化合成的。它们通过IR,1 H NMR和MS进行结构表征。通过用氢氧化钠中和前体酸来制备单烷基酰胺邻苯二甲酸钠表面活性剂。它们的水的表面张力降低至30-38 MN米-1以10浓度水平-4摩尔大号-1。
Scaleable two-component gelator from phthalic acid derivatives and primary alkyl amines: acid–base interaction in the cooperative assembly
作者:Ting Su、Kwon Ho Hong、Wannian Zhang、Fei Li、Qiang Li、Fang Yu、Genxiang Luo、Honghe Gao、Yu-Peng He
DOI:10.1039/c7sm00797c
日期:——
A series of phthalic acid derivatives (P) with a carbon-chain tail was designed and synthesized as single-component gelator. Combination of the single-component gelator P and non-gelling additive n-alkylamine A through acid-baseinteraction brought out a series of novel phase-selective two-component gelator PA. Gelation capability of P and PA, structural, morphological, thermos-dynamic and rheological
METHOD OF REMOVING IRON-CONTAINING SCALE FROM A WELLBORE, PIPE, OR SURFACE USING A BIODEGRADABLE DESCALER SOLUTION
申请人:King Fahd University of Petroleum and Minerals
公开号:US20210207019A1
公开(公告)日:2021-07-08
A method of removing iron-containing scale from a wellbore, pipe, or metal-containing surface involving contacting the iron-containing scale with a biodegradable descaler solution of water, hydrochloric acid, formic acid, citric acid, a corrosion inhibitor, a corrosion inhibitor intensifier, and a surfactant. The method is performed at a pressure of 14 to 400 psi and a temperature of 100 to 150° C. The method removes iron-containing scale made of iron sulfide, iron carbonate, iron oxyhydroxide, and calcium carbonate. The method meets industry standard steel corrosion rates of less than 0.049 lb/ft
2
per day. Also disclosed is a biodegradable descaler solution of water, hydrochloric acid, formic acid, citric acid, a corrosion inhibitor, a corrosion inhibitor intensifier, and a surfactant that meets OECD 301B thresholds for ready biodegradability.