Fixed-bed process of liquid-phase ammoximation of cyclohexanone over titanosilicates

钛硅分子筛固定床催化环己酮肟的绿色合成

“…经 在 丙 烯 环 氧 化 的 固 定 床 反 应 过 程 得 到 了 工 业 应 用 [25] . 针对环己酮氨氧化固定床成型催化剂的研究 例子相对较少, 华东师范大学Liu研究组 [26] 开展了以 TS-1为催化剂催化环己酮液相氨氧化固定床工艺的 和中间体羟胺 [23] .…”

Amphiphilic Titanosilicates as Pickering Interfacial Catalysts for Liquid-Phase Oxidation Reactions

“…Titanium-containing silicates, typically represented by TS-1 first reported in 1983, have attracted great interest due to their outstanding catalytic properties in liquid-phase selective oxidation reactions using hydrogen peroxide as a mild oxidant. − Over the past decades, dozens of Ti-containing porous materials with different frameworks and pore architectures have been developed, including the archetypal Ti-MWW, , Ti-BEA, Ti-MOR, − Ti-MCM-41, and Ti-SBA-15 . As a result of extensive fundamental research, some titanosilicates have also achieved great successes in environmentally benign petrochemical processes such as TS-1 for phenol hydroxylation, cyclohexanone ammoximation − and propylene epoxidation, and Ti-MWW for methyl ethyl ketone ammoximation …”

An Integrated Process for the Synthesis of Solid Hydroxylamine Salt with Ammonia and Hydrogen Peroxide as Raw Materials

“…Recently, the discovery of titanium silicalite-1 (TS-1) opened new green catalytic processes with hydrogen peroxide as an oxidant. , Soon after, this success prompted an important TS-1-catalyzed reaction, which produces cyclohexanone oxime from cyclohexanone, H 2 O 2 , and NH 3 (reaction 3). ,− Considering this, a flash idea came into our mind. Could these two reactions, that is, reactions 2 and 3, be combined to synthesize hydroxylamine as shown in Scheme ?…”