Evaluation of sulfonic acid functionalized covalent triazine framework as a hydrophilic-lipophilic balance/cation-exchange mixed-mode sorbent for extraction of benzimidazole fungicides in vegetables, fruits and juices

2020 ◽  
Vol 1618 ◽  
pp. 460847 ◽  
Author(s):  
Wenjie Zhao ◽  
Xiaoyu Wang ◽  
Jianhua Guo ◽  
Yun Guo ◽  
Chen Lan ◽  
...  
Keyword(s):  
Cation Exchange ◽  
Sulfonic Acid ◽  
Mixed Mode ◽  
Benzimidazole Fungicides ◽  
Hydrophilic Lipophilic Balance ◽  
Covalent Triazine Framework

Study on Synthesis of Ester of Citric Acid and Palmityl Alcohol

2014 ◽  
Vol 900 ◽  
pp. 361-364
Author(s):  
Xiao Hui Wang ◽  
Xi Hua Du ◽  
Li Min Dong
Keyword(s):  
Reaction Time ◽  
Citric Acid ◽  
Cation Exchange ◽  
Sulfonic Acid ◽  
Exchange Resin ◽  
Cation Exchange Resin ◽  
Molar Ratio ◽  
Esterification Reaction ◽  
Process Conditions ◽  
Toluene Sulfonic Acid

Esters of Citric acid and palmityl alcohol were synthesized by esterification reaction under catalysis of cation exchange resin and P-toluene sulfonic acid respectively. The effects of amount of catalyst, ratio of raw materials, reaction time and temperature on the synthesis reaction were investigated . The experimental results showed that optimum of process conditions were 1:1~1:1.5 molar ratio of citric acid and palmityl alcohol, reaction temperature of 130~140°C, reaction time of 2 h. Conversion of palmityl alcohol were all more than 90% under 0.3% dosage using p-toluene sulfonic acid as the catalyst, or 0.5% dosage using 721 cation exchange resin with sulfonic acid type as catalyst. The synthesized product had good surface activity.

ChemInform Abstract: Sulfonic Acid Based Cation-Exchange Resin: A Novel Proton Source for One-Pot Diazotization-Iodination of Aromatic Amines in Water.

ChemInform ◽  
2008 ◽  
Vol 39 (22) ◽  
Author(s):  
Victor D. Filimonov ◽  
Nadya I. Semenischeva ◽  
Elena A. Krasnokutskaya ◽  
Alexei N. Tretyakov ◽  
Ho Yun Hwang ◽  
...  
Keyword(s):  
Cation Exchange ◽  
Aromatic Amines ◽  
Sulfonic Acid ◽  
Exchange Resin ◽  
Cation Exchange Resin ◽  
One Pot ◽  
Proton Source

Characterization of Retention Mechanisms in Mixed-Mode HPLC with a Bimodal Reversed-Phase/Cation-Exchange Stationary Phase

2018 ◽  
Vol 81 (3) ◽  
pp. 387-399 ◽  
Author(s):  
Elise Lemasson ◽  
Yoann Richer ◽  
Sophie Bertin ◽  
Philippe Hennig ◽  
Caroline West
Keyword(s):  
Stationary Phase ◽  
Cation Exchange ◽  
Mixed Mode ◽  
Reversed Phase ◽  
Retention Mechanisms

Controlled metal loading on poly(2-acrylamido-2-methyl-propane-sulfonic acid) membranes by an ion-exchange process to improve electrodialytic separation performance for mono-/bi-valent ions

2015 ◽  
Vol 3 (35) ◽  
pp. 18279-18288 ◽  
Author(s):  
Amit K. Thakur ◽  
Murli Manohar ◽  
Vinod K. Shahi
Keyword(s):  
Ion Exchange ◽  
Cation Exchange ◽  
Sulfonic Acid ◽  
Exchange Process ◽  
Separation Performance ◽  
Metal Loading ◽  
Ion Exchange Process

Cross-linked poly(2-acrylamido-2-methyl-propanesulfonic acid) (PMPS)-based cation-exchange membranes (CEMs) were prepared, and the mono-valent selectivity of the membranes was significantly improved by a pore-sieving strategy using metal (copper) loading.

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