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Nano Silica with High Surface Area from Rice Husk as a Support for 12-Tungstophosphoric Acid: An Efficient Nano Catalyst in Some Organic Reactions（图）
amorphous silica heteropolyacid heterogeneous catalysis nano catalyst rice husk
2013/10/5
Nano silica was prepared from rice husk with high surface area. X-ray diffraction (XRD) pattern showed that the amorphous form of silica was produced. Chemical composition of the nano silica was estim...
Tungstophosphoric Acid Supported on Highly Organosoluble Polyamide (PW12/PA): Highly Efficient Catalysts for the Synthesis of Novel 1,3,5-Triaryl-2-pyrazoline Derivatives（图）
inorganic-organic hybrid polyoxometalate pyrazoline phenylhydrazine chalcone
2013/10/14
A novel compound constructed from polyoxometalate (H3PW12O40, PW12) and poly(amidoamine) (PA) was prepared at room temperature in an aqueous solution by an impregnation method. A series of novel 1,3,5...
Immobilization of 12-Tungstophosphoric Acid on AlSBA-15 and Its Catalytic Activity for Acetylation
heteropoly acid mesopore AlSBA15 anisole propionic anhydride propionylation
2009/9/15
12-Tungstophosphoric heteropoly acid (TPA) with a Keggin structure was introduced into Al-incorporated mesoporous molecular sieves (AlSBA-15) by the incipient wetness method. The materials were charac...
Tungstophosphoric Acid-catalyzed Oxidative Desulfurization of Naphtha with Hydrogen Peroxide in Naphtha/Acetic Acid Biphasic System
Oxidative desulfurization Naphtha Tungstophosphoric acid Hydrogen peroxide
2009/7/28
The 12-tungstophosphoric acid (TPA)-catalyzed oxidative desulfurization of naphtha with H2O2 was investigated. All organosulfur compounds examined were efficiently oxidized with H2O2 and TPA catalyst ...
Immobilized Tungstophosphoric Acid-catalyzed Oxidative Desulfurization of Diesel Oil with Hydrogen Peroxide
Immobilized catalyst Tungstophosphoric acid Hydrogen peroxide Dibenzothiophene
2009/7/23
An immobilized 12-tungstophosphoric acid on an anion exchange resin (TPA/AER) catalyzes the oxidation of dibenzothiophene and 4, 6-dimethyldibenzothiophene with H2O2 in acetonitrile (MeCN) to give the...