A chitosan modified Pt/SiO2 catalyst for the synthesis of 3-poly(ethylene glycol) propyl ether-heptamethyltrisiloxane applied as agricultural synergistic agent

Platinum on 2-aminoethanethiol functionalized MIL-101 as a catalyst for alkene hydrosilylation

“…Therefore, it has a certain use in industrial production. 15 The effects of different loadings of Pt d+ /AET-MIL-101 and separate factors on the catalytic activity of F-6 and MDHM hydrosilylation reactions were investigated. The catalytic results are summarized in Table 2.…”

“…Among which platinum (Pt) catalysts, 12 such as hexachloroplatinic acid (Speier catalyst) 13 and Karstedt catalyst, 14 are the most effective in the hydrosilylation reaction. 15,16 Despite widespread application, homogeneous Pt-based catalysts still suffer from considerable problems: (i) the decomposition of catalysts causes undesirable side reactions and colored products, which have signicant effects on the quality of the products and limits their applications, 17 and (ii) the consumption of Pt not only leads to high catalyst cost but is also a waste of Pt resources. These disadvantages push the development of heterogeneous catalysts, which have been extensively studied because of their ease of separation and their recyclability.…”

Recyclable TPA-Modified MIL-88-Supported Ionic Pt as a Highly Efficient Catalyst for Alkene Hydrosilylation

“…The catalyst catalyzed the reaction of propylene glycol polyether with heptamethyltrisiloxane and obtained a β-addition product in 94% yield. 15 Li et al prepared a new SiO 2 -loaded platinum catalyst SiO 2 –ethylenediaminetetraacetic acid (EDTA)–Pt by grafting ethylenediaminetetraacetic acid (EDTA) onto a silica carrier containing aminopropyltriethoxysilane in the addition reaction of 1-hexene and methyldichlorosilane. The resulting catalyst exhibited excellent selectivity; the catalytic yields were still over 80% after it was reused for five times.…”

Antifungal activity of double Schiff bases of chitosan derivatives bearing active halogeno-benzenes

“…As the only natural cationic amino polysaccharide, chitosan has attracted widespread attention owing to its antioxidant ability, antifungal activity, antitumor property, biocompatibility, biodegradability, and non-toxicity [9][10][11][12]. Chitosan and its derivatives have been widely applied in agriculture, pharmaceuticals, packaging, functional food, textile, coating, environmental protection, biotechnology, and cosmetics [13][14][15][16][17][18][19][20]. Chitosan oligosaccharide, low molecular weight chitosan, is a potential plant immunity, which can be used as a new kind of vaccine against plant diseases [21,22].…”