Study on Synthesis of Alkynoxymethyl Benzyl Quaternary Ammonium Salt and its Corrosion Inhibition for Blast Furnace Gas Pipeline

2014 ◽  
Vol 672-674 ◽  
pp. 684-687
Author(s):  
Hu Zhang ◽  
Fu Rong Zhou
Keyword(s):  
Blast Furnace ◽  
Corrosion Inhibition ◽  
Ammonium Salt ◽  
Quaternary Ammonium ◽  
Quaternary Ammonium Salt ◽  
Raw Materials ◽  
Electrochemical Process ◽  
Gas Pipeline ◽  
Blast Furnace Gas ◽  
Inhibition Performance

Two kinds of alkynoxymethyl benzyl quaternary ammonium salt (ABQAS) were synthesized by raw materials of paraformaldehyde, propiolic alcohol, organic amine, benzyl chloride and ethanol under nitrogen protection, toluene as carrying agent. The products were characterized by FTIR. According to the characteristics of blast furnace gas pipeline, quaternary ammonium salt type compound corrosion inhibitor formulas were designed, and their corrosion inhibition performance were evaluated by weight-loss method and electrochemical method. The results showed that the products were synthesized as expected, the two kinds of products had excellent inhibition performance to the cathode electrochemical process of A3 carbon steel, and the corrosion inhibition efficiency in simulative blast furnace gas reached to 100%.

Research on Synthesis and Complex of Corrosion Inhibitor for Blast Furnace Gas Pipeline

2014 ◽  
Vol 1010-1012 ◽  
pp. 626-629
Author(s):  
Xing Cheng ◽  
Yan Chun Huang ◽  
Xiao Ling Deng ◽  
Shu Ting Mei ◽  
Hu Zhang ◽  
...  
Keyword(s):  
Blast Furnace ◽  
Corrosion Inhibitor ◽  
Corrosion Inhibition ◽  
Inhibitory Effect ◽  
Electrochemical Process ◽  
Gas Pipeline ◽  
Blast Furnace Gas ◽  
Weight Loss Method ◽  
Loss Method ◽  
Inhibition Performance

4-(N,N-dibutylaminomethyl) morpholine salt (DBM) was synthesized with morpholine，di-n-butylamine，paraformaldehyde under acid condition and characterized by IR. According to corrosion reason and characteristic of blast furnace gas pipeline, DBM, cyclohexylamine, ethanolamine, propargyl alcohol, etc were chosen as composition of compound corrosion inhibitor formulations, and their corrosion inhibition performance were evaluated by weight-loss method and electrochemical method. The results showed that the yield of DBM was 93.95% when mole ratio of morpholine, di-n-butylamine and paraformaldehyde was 1:1.2:1.2 and reaction temperature was 60 °C, reaction time was 5 h. The compound corrosion inhibitor containing DBM exhibited good inhibitory effect to cathode electrochemical process to the corrosion of A3 carbon steel cathode electrochemical process and the corrosion inhibition efficiency was 98.46%.

Indolizine quaternary ammonium salt inhibitors part II: a reinvestigation of an old-fashioned strong acid corrosion inhibitor phenacyl quinolinium bromide and its indolizine derivative

2018 ◽  
Vol 42 (15) ◽  
pp. 12977-12989 ◽  
Author(s):  
Yefei Wang ◽  
Zhen Yang ◽  
Fengtao Zhan ◽  
Zhifeng LYu ◽  
Chengyou Han ◽  
...  
Keyword(s):  
Corrosion Inhibitor ◽  
Corrosion Inhibition ◽  
Ammonium Salt ◽  
Quaternary Ammonium ◽  
Quaternary Ammonium Salt ◽  
Acid Corrosion ◽  
Strong Acid ◽  
Acid Corrosion Inhibitor

Anti-corrosion inhibition was dramatically improved by transforming heterocyclic ammonium inhibitors into their dimer indolizine derivatives.

Synthesis of Quaternary Ammonium Salt Cationic Surfactant with Long-Chain Alkyl and Epoxy Groups

2012 ◽  
Vol 554-556 ◽  
pp. 864-867 ◽  
Author(s):  
Zong Cheng Miao ◽  
Fang Wang ◽  
Deng Deng ◽  
Lei Wang ◽  
Jian Zhou Yang
Keyword(s):  
Cationic Surfactant ◽  
Ammonium Salt ◽  
Quaternary Ammonium ◽  
Quaternary Ammonium Salt ◽  
Traditional Method ◽  
Raw Materials ◽  
Reaction Conditions ◽  
Important Intermediate ◽  
Epoxy Groups ◽  
Long Chain

The quaternary ammonium salt cationic surfactant with long-chain alkyl and epoxy groups is very important intermediate product to synthesis novel functional surfactants. In this paper, a kind of quaternary ammonium salt cationic surfactant with long-chain alkyl and epoxy groups was synthesized by traditional method with epichlorohydrin and N-octadecyldimethylamine as raw materials. During the synthesis, the best reaction conditions have been obtained, that the reaction temperature is 35 °C, the reaction time is 4 h and the best mol ratio of epichlorohydrin to timethylamine is 5:1. In addition, the synthesized intermediate with long-chain alkyl and epoxy groups plays a very important roles in the development of cationic surfactant.

Study on Synthesis and Properties of a New Imidazoline Corrosion Inhibitor

2011 ◽  
Vol 233-235 ◽  
pp. 325-331
Author(s):  
Hai Yan Qiu ◽  
Jun Dong
Keyword(s):  
Ammonium Salt ◽  
Quaternary Ammonium ◽  
Quaternary Ammonium Salt ◽  
Combined System ◽  
Synthetic Product ◽  
Synthetic Inhibitor ◽  
Weight Loss Method ◽  
Loss Method ◽  
Inhibition Performance ◽  
Triethylene Tetramine

A kind of soluble triphenyl-imidazoline quaternary-ammonium-salt was synthesized from benzoic acid, triethylene tetramine, and benzyl chloride. The structure of synthetic product was characterized by IR, and the corrosion inhibition performance was tested by static weight loss method. The corrosion-inhibiting rate of the imidazoline quaternary–ammonium-salt in the concentration of 1.0% was above 99.0%. In this paper, the compounding between the synthetics and I- was studied, and the results showed that the inhibition performance of synthetic inhibitor and its combined system was satisfying.

Application of Diester Gemini Quaternary Ammonium Salt as Paper Softening Agent

2014 ◽  
Vol 1004-1005 ◽  
pp. 696-698
Author(s):  
Xiao Ping Huo ◽  
Jian Wei Ren ◽  
Zong Cheng Miao
Keyword(s):  
Cationic Surfactant ◽  
Ammonium Salt ◽  
Quaternary Ammonium ◽  
Quaternary Ammonium Salt ◽  
Raw Materials ◽  
Important Application ◽  
Important Paper ◽  
Softening Effect ◽  
Environment Friendly ◽  
Quaternary Ammonium Cationic Surfactants

Quaternary ammonium cationic surfactants have very important application in the papermaking industry, which is a series of important paper softening agents. In order to obtain an environment-friendly paper softening agent, a novel diester gemini quaternary ammonium salt cationic surfactant has been prepared. Dodecyldimethyl amine, epichlorohydrin and adipic acid were used as raw materials to synthesize the surfactant, and Fourier transform infrared spectroscopy was used to characterize the groups in reaction product. Moreover, the softening effect of the diester gemini quaternary ammonium salt cationic surfactant was studied in detail.

scholarly journals Synthesis and Characterization of Nano-SiO2@octadecylbisimidazoline Quaternary Ammonium Salt Using as Acidizing Corrosion Inhibitor

2021 ◽  
Author(s):  
Yunfeng Liu ◽  
Xingde Zhang ◽  
Zhengsong Qiu ◽  
Lili Chen
Keyword(s):  
High Temperature ◽  
Corrosion Inhibition ◽  
Ammonium Salt ◽  
Quaternary Ammonium ◽  
Quaternary Ammonium Salt ◽  
Steel Sheet ◽  
Testing Machine ◽  
High Concentration ◽  
N80 Steel ◽  
Quantum Chemistry Calculations

Abstract Aiming at the current situation that the existing acidizing corrosion inhibitors are difficult to apply to high temperature, high concentration acid, and other complex conditions. This paper uses nano-SiO2 as the core and preferably functional monomers to synthesize nano-SiO2@octadecylbisimidazoline quaternary ammonium salt. Analytical methods such as nuclear magnetic resonance, infrared, SEM were used for characterization. The corrosion inhibition performance of the N80 steel sheet by nano-SiO2@octadecylbisimidazoline quaternary ammonium salt in 20% concentrated hydrochloric acid was studied using the high-temperature corrosion testing machine and adsorption isotherm model. Combined with quantum chemistry calculations to explore its mechanism of action. The results show that nano-SiO2@octadecylbisimidazoline quaternary ammonium salt has good high-temperature resistance. When the temperature is 180℃ and the dosage of nano-SiO2@octadecylbisimidazoline quaternary ammonium salt is 4%, the corrosion inhibition rate is 61.42g·m− 2·h− 1. Studies have shown that the adsorption of nano-SiO2@octadecylbisimidazoline quaternary ammonium salt on the surface of the N80 steel sheet follows the Langmuir isotherm adsorption model, which is spontaneous chemical adsorption.

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