4559-23-3Relevant academic research and scientific papers
Rosin-based porous heterogeneous catalyst functionalized with hydroxyl groups and triazole groups for CO2 chemical conversion under atmospheric pressure condition
Gao, Jinbin,Lai, Shilin,Xiong, Xingquan
, (2021/07/14)
Development of efficient, green and recyclable heterogeneous catalysts for the chemical conversion of CO2 into cyclic carbonates with excellent yields under atmospheric pressure condition is still a very challenging task. Herein, a class of biomass-derived hyper-cross-linked porous heterogeneous catalysts MPAc-Br and MPAc-OH-Br, based on easily available and sustainable rosin, was synthesized by Friedel–Crafts polymerization and the further N-alkylation of triazole groups. Compared with MPAc-Br, the bifunctional catalyst MPAc-OH-Br (bearing triazole IL groups and -OH groups) exhibited higher catalytic activity for direct chemical conversion of CO2 into cyclic carbonates (up to 99% yields) under metal-, solvent-free and atmospheric pressure conditions. The rosin-based porous molecular structure and bifunctional groups on the surface of MPAc-OH-Br played a very important role in the promoting the cycloaddition of CO2 with epoxides under the optimal conditions. Furthermore, MPAc-OH-Br exhibited good stability and reusability (96% yield after 10 recycles).
Sodium alkylmaleimide carboxylate, and preparation method and application thereof
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Paragraph 0071; 0072, (2020/04/17)
The invention discloses a sodium alkylmaleimide carboxylate, and a preparation method and an application thereof. The structural formula of the sodium alkylmaleimide carboxylate is shown in the description, and n in the formula is 8-16. The preparation method of the sodium alkylmaleimide carboxylate comprises the following steps: 1) performing a D-A addition reaction on rosin and maleic anhydrideto obtain maleated rosin; 2) performing an imidization reaction on the maleated rosin and alkylamine to obtain alkylmaleimide carboxylic acid; and 3) carrying out a neutralization reaction on the alkylmaleimide carboxylic acid and a sodium-containing basifying agent. The invention further discloses the application of the sodium alkylmaleimide carboxylate. The sodium alkylmaleimide carboxylate enriches the variety of rosin surfactant products, improves the added values of rosin, has mild preparation conditions, and has the advantages of safety, no toxicity, no pollution, greenness and environmental protection.
