Sulfonic acid-functionalized magnetic carbon nitride as highly efficient ionic composite for sustainable assembly of 1,2,3-triazoles

Research Progress on Reactions Involving β-Nitrostyrene

“…图式 7 合成 N-取代苄基亚胺或苄基腙的反应机理 Scheme 7 Reaction mechanism of synthesizing N-substituted benzylimines or benzylhydrazones 2019 年, 邓国军课题组 [23] [26][27][28][29][30][31][32][33][34][35][36][37][38] . 该类反应大多具 有广泛的底物范围以及优异的产率, 且酸催化剂还可以 回收再利用(Eq.…”

One Pot Synthesis of Cubic Mesoporous Silica KIT‐6 Functionalized with Sulfonic Acid for Catalytic Dehydration of Fructose to 5‐Hydroxymethylfurfural

“…The recycling of the catalyst could minimize the negative impact of the chemical processes on the environment that is much needed for the "green chemistry" [23,24] Due to the environmentally friendly nature of the heterogeneous catalysts, enormous attention has been paid on the design and synthesis of solid acid catalysts for use in the petrochemicals, pharmaceutical or cosmetic. [25][26][27][28][29][30][31][32][33][34] Several heterogenous acid catalysts such as strong acid cation exchange resins, [35] H-form zeolites, [36] supported heteropolyacids [37,38] and mesoporous materials with À SO 3 H functional groups [39][40][41] have been used for the catalytic dehydration of fructose to HMF. Amongst these heterogeneous catalysts, mesoporous silicas supported À SO 3 H functional groups are considered as excellent catalysts for the production of HMF via dehydration of hexoses due to their high surface areas, tunable pore sizes, large pore volumes, highly ordered structures, and relatively high thermal and mechanical stabilities.…”

“…On the other hand, heterogeneous catalysis has the advantage of facile separation of the catalysts from the reaction mixture for recycling and reuse, and therefore it is preferred over the homogeneous catalysis for biomass conversion reactions. The recycling of the catalyst could minimize the negative impact of the chemical processes on the environment that is much needed for the “green chemistry” [23,24] Due to the environmentally friendly nature of the heterogeneous catalysts, enormous attention has been paid on the design and synthesis of solid acid catalysts for use in the petrochemicals, pharmaceutical or cosmetic [25‐34] . Several heterogenous acid catalysts such as strong acid cation exchange resins, [35] H‐form zeolites, [36] supported heteropolyacids [37,38] and mesoporous materials with −SO 3 H functional groups [39‐41] have been used for the catalytic dehydration of fructose to HMF.…”