Epoxidation of allyl choride with molecular oxygen and 2-ethyl-anthrahydroquinone catalyzed by TS-1

Environmental-Friendly Catalytic Oxidation Processes Based on Hierarchical Titanium Silicate Zeolites at SINOPEC

“…In fact, TS-1 zeolite is of high catalytic activity in olefin epoxidation reaction, and many H 2 O 2 oxidized propylene epoxidation units (called HPPO process) have been established in global. However, TS-1 shows poor catalytic performance in the epoxidation of AC with H 2 O 2 due to the strong electron-withdrawing effect of Cl atoms on C=C bonds [45,46]. However, in the presence of HCl, the epoxidation reaction can be accelerated, which is ascribed to the promotion of chemical balance to DCP via ring-opening reaction catalyzed by H + species.…”

Preparation of Micron-Sized TS-1 Spherical Membrane Catalysts and Their Performance in the Epoxidation of Chloropropene

“…Epichlorohydrin (ECH) is an important raw chemical material and organic intermediate that has been widely used in the production of epoxy resin, glycerol, glycidyl ether, quaternary ammonium salt, and chloro-alcohol rubber. − At present, the main industrial production methods of epichlorohydrin include the chlorination of propylene at high temperatures, the allyl alcohol method, and the glycerol method. , Traditional production methods cause serious corrosion to equipment, with most of the byproducts being treated by incineration, and generate a large amount of wastewater, thus making this process fail to meet the requirements necessary to be environmentally friendly. , Titanium silica (TS-1) molecular sieves have been widely used in olefin epoxidation, the hydroxylation of aromatic rings, oxime of cyclohexanone, and the oxidation of alcohols and saturated hydrocarbons using hydrogen peroxide as an oxidant. − The process of TS-1/H 2 O 2 catalyzing propylene chloride epoxidation to produce epichlorohydrin was shown to achieve high efficiency, environmental friendliness, and economic feasibility, greatly simplifying the process and offering good application prospects. − In industrial production, such as that for HPPO (hydrogen peroxide-epoxyrine), fixed-bed processes have gradually been developed, − and most catalysts used in fixed beds need to be shaped. , The binder used in traditional molding methods will cover the surface of the molecular sieve and active sites, leading to a low utilization rate of the catalyst. This problem can be solved by loading the molecular sieve directly on the support surfaces.…”

“…Epichlorohydrin (ECH) is an important raw chemical material and organic intermediate that has been widely used in the production of epoxy resin, glycerol, glycidyl ether, quaternary ammonium salt, and chloro-alcohol rubber. 1 − 3 At present, the main industrial production methods of epichlorohydrin include the chlorination of propylene at high temperatures, the allyl alcohol method, and the glycerol method. 4 , 5 Traditional production methods cause serious corrosion to equipment, with most of the byproducts being treated by incineration, and generate a large amount of wastewater, thus making this process fail to meet the requirements necessary to be environmentally friendly.…”

Gas phase safety-control conditions for epoxidation of allyl chloride with hydrogen peroxide catalysed by TS-1

“…Titanium silicate 1 (TS-1) is an efficient catalyst for the selective oxidation of hydrocarbons (Baerlocher, McCusker, & Olson, 2007;Kielcev, 1980;Taramasso, Perego, & Notari, 1983;Thangaraj, Kumar, Mirajkar, & Ratnasamy, 1991;Thomas & Raja, 2006). It can be applied to the epoxidation of olefins (Clerici, Bellussi, & Romano, 1991;Tatsumi, Nakamura, Yuasa, & Tominaga, 1991;Wang, Mi, Wang, & Wang, 2005), the oxidation of alcohols to form aldehydes and ketones (Clerici & Bellussi, 1992;Esposito, Neri, & Buonomo, 1984), and the hydroxylation of phenols and other aromatic compounds (Kooyman et al, 1992;. Moreover, a global-scale hydrogen peroxide-to-propylene oxide (HPPO) process based on TS-1 is scheduled for commercialisation.…”