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Study on the High Temperature Resistance Microemulsified Hydrochloric Acid Systems Containing Cationic Gemini Surfactant

Author: HaoMin
Tutor: FangBo
School: East China University of Science and Technology
Course: Chemical Engineering
Keywords: Gemini cationic surfactant high temperature resistance microemulsified hydrochloric acid microemulsion emulsified acid acidification
CLC: TQ423
Type: Master's thesis
Year: 2012
Downloads: 47
Quote: 0
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Abstract


In this paper, the high temperature resistance microemulsified hydrochloric acid emulsified by Gemini18-3-18/AEO9, Gemini/CTAC/AEO9 and the microemulsified hydrochloric acid containing polylol were prepared by using octadecyl ammonium chloride (Gemini18-3-18), hexadecyl trimethyl ammonium chloride (CTAC) and fatty alcohol-polyoxyethylene ether(AEO9) as main surfactants. The stability, controlled-release reactivity and CaCl2 tolerance of the system were investigated. The thermodynamic parameters of microemulsified hydrochloric acid containing polylol were studied. The main conclusions were made as follows:1. The diesel microemulsified hydrochloric acid system can be obtained by using Gemini18-3-18 and AEO9 as main surfactants, n-butnaol and n-octanol as co-surfactants. The microemulsified acid system possessed good thermal stability at 95℃. The effect of structure of the surfactant on the thermal stability was researched. The optimal formula of emulsifier was obtained. The steel corrosion and the marbles corrosion inhibition rate were up to 65.84% and 69.32% respectively.The tolerance of CaCl2 reached 230000mg/L. Either the thermal stability or CaCl2 tolerance have improved highly compared with the literature.2. The diesel microemulsified hydrochloric acid system and the pseudoternary phase diagram were obtained by using Gemini18-3-18, CTAC and AEO9. This microemulsified acid system possessed good thermal stability at 100℃. The acid dissolved quantity, controlled acid release and tolerance of CaCl2 of the system were investigated. The hydrochloric gelatin acids were gained.3. The high temperature resistance diesel microemulsified hydrochloric acids containing glycerol and glycol were obtained respectively by using Gemini18-3-18 as single surfactant. The system possessed good thermal stability at 100℃. The ability of controlled acid release containing glycerol was up to 91.21%.4. The microemulsified acid containing polylol systems were prepared by using Gemini18-3-18 and AEO9 as main surfactants and n-octanol as co-surfactants. The thermodynamic parameter of the microemulsified acid was investigated. The influences of the presence of polylol on the parameters were also researched. The results settled theory basis on the formation of microemulsified acid containing non-aqueous polar solvent.

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CLC: > Industrial Technology > Chemical Industry > Reagents and the production of pure chemicals > Surfactant
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