Gemini quaternary ammonium salt cationic surfactant‐assisted hydrothermal synthesis: An effective way to tune the textural properties of zeolite and the acidity of Beta molecular sieves

2017 ◽  
Vol 32 (3) ◽  
pp. e4145 ◽  
Author(s):  
Shiyao Wang ◽  
Ziliang Zheng ◽  
Bo He ◽  
Chen Sun ◽  
Xing Li ◽  
...  
2011 ◽  
Vol 239-242 ◽  
pp. 3257-3261 ◽  
Author(s):  
Peng Wang ◽  
Zhen Dong Zhao ◽  
Li Zhi He ◽  
Liang Wu Bi ◽  
Yu Xiang Chen

Mesoporous zirconias were prepared by precipitation method using rosin-based quaternary ammonium salt as a directing agent. The samples were characterized by means of XRD, FT-IR and N2-adsorption and desorption measurements. The phase of precursors was amorphous, and well crystallized tetragonal zirconias were obtained after the calcination at 450 °C. The synthesized mesoporous zirconias possessed high surface areas ranging from 183.56 to 203.87 m2g-1and big pore diameters varying from 6.27 to 7.58 nm. The content of the rosin-based quaternary ammonium salt had significant influence on the textural properties of the mesoporous zirconias. Surface areas, pore volumes and pore diameters of the mesoporous zirconias decreased when increasing the surfactant dosage.


2008 ◽  
Vol 62 (19) ◽  
pp. 3450-3452 ◽  
Author(s):  
Zongcheng Miao ◽  
Jianzhou Yang ◽  
Lei Wang ◽  
Yong Liu ◽  
Long Zhang ◽  
...  

2012 ◽  
Vol 174-177 ◽  
pp. 1433-1436 ◽  
Author(s):  
Zong Cheng Miao ◽  
Fang Wang ◽  
Deng Deng ◽  
Yong Ming Zhang ◽  
Xiao Ping Huo ◽  
...  

In order to obtain some novel cationic surfactants with high surface activity, n-octadecyldimethylamine and epichlorohydrin were used to synthesize 2-hydroxy-1, 3-dis (chloride octadecyl dimethyl ammonium) propane, which was a kind of gemini quaternary ammonium salt. N-octadecyldimethylamine and epichlorohydrin were used to prepare active epoxy intermediate glycidyloctadecyldimethyl ammonium chlorided, and then glycidyloctadecyldimethyl ammonium chlorided was reacted with octadecyldimethyl amine hydrochloride to synthesize the gemini cationic surfactant. FTIR and 1H NMR were used to represent structure of the gemini cationic surfactant. The interface characteristics were studied in detail. The critical micellar concentration (CMC) was determined by surface tension test to obtain the values of CMC and surface tension at CMC. The foam ability and foam stability of the gemini cationic surfactant were also discussed through contrast octadecyltrimethyl ammonium chloride and cetyltrimethyl ammonium chloride.


2013 ◽  
Vol 364 ◽  
pp. 664-668 ◽  
Author(s):  
Su Rong Jin ◽  
Ke Zhang ◽  
Jin Xing Pang ◽  
Shan Shan Song

In this paper, the non-ionic intermediate was prepared by op-10 and epoxy chloropropane; the quaternary ammonium salt intermediate was prepared by triethylamine and epoxy chloropropane; the op-10/cationic surfactant composite asphalt emulsifier was synthesized by reacting with non-ionic intermediate, quaternary ammonium salt intermediate and N-octadecyl propylene diamine. The effect of synthesis conditions and the prescription on the emulsifying property, surface activity and using performance of emulsifier was studied, a new way for the preparation of the composite asphalt emulsifier was explored.


2012 ◽  
Vol 554-556 ◽  
pp. 864-867 ◽  
Author(s):  
Zong Cheng Miao ◽  
Fang Wang ◽  
Deng Deng ◽  
Lei Wang ◽  
Jian Zhou Yang

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.


CrystEngComm ◽  
2015 ◽  
Vol 17 (44) ◽  
pp. 8555-8561 ◽  
Author(s):  
Miao Yang ◽  
Peng Tian ◽  
Lin Liu ◽  
Chan Wang ◽  
Shutao Xu ◽  
...  

2014 ◽  
Vol 1004-1005 ◽  
pp. 696-698
Author(s):  
Xiao Ping Huo ◽  
Jian Wei Ren ◽  
Zong Cheng Miao

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.


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