China Petrochemical Development Corporation

China Petrochemical Development Corporation, Taipei (taiwan)

China Petroleum Development Corporation, Taipei (taiwan)

Cheng-Fa Hsieh

Pin-To Yao

Chien-Chang Chiang

Shih-Yao Chao

Chien-Chuan Shih

Ya-Ping Chen

Tung-Han Tsai

Shu-Hung Yang

Yi-Bau Hung

Yu-Chuan Hsu

Chi-Yuan Chen

I-Hui Lin

Hung-Hung Hseuh

Yuh-Ing Hwang

Ren-Hao Hsu

Shun-I Fang

Yang-Min Liang

Chun-Kao Wang

The present invention provides a titanium-silicalite molecular sieve and a method for preparing the same. The method includes the steps of preparing a mixture of a titanium source, a silicon source, a metal source selected from IIA to IVA elements and a template agent; heating the mixture to form a gel mixture; heating the gel mixture in a water bath; and calcining the gel mixture after the gel mixture in the water bath to form the titanium-silicalite molecular sieve. The present invention further provides a method for preparing cyclohexanone oxime by using the titanium-silicalite molecular sieve as the catalyst which results in high conversion rate, high selectivity and high usage efficiency of hydrogen peroxide.

Titanium-silicalite molecular sieve, method for preparing the same and method for preparing cyclohexanone oxime using the molecular sieve

The present invention provides a titanium-silicalite molecular sieve and a method for preparing the same. The method includes the steps of preparing a mixture of a titanium source, a silicon source, a transition metal source, a template agent and water; heating the mixture to form a gel mixture; heating the gel mixture in a water bath; and calcining the gel mixture after the gel mixture in the water bath to form the titanium-silicalite molecular sieve. The present invention further provides a method for preparing cyclohexanone oxime by using the titanium-silicalite molecular sieve as the catalyst which results in high conversion rate, high selectivity and high usage efficiency of hydrogen peroxide.

A method for hydroxylation of phenol is disclosed. The method includes the step of performing a reaction of phenol and hydrogen peroxide to form diphenol in the presence of solid catalyst with zeolite framework, wherein the solid catalyst includes silicon oxide, titanium oxide and cobalt oxide. The solid catalyst used in the preparation of diphenol of the present invention has high conversion rate of diphenol, selectivity of diphenol and higher utilization rate of hydrogen peroxide without using high concentration of hydrogen peroxide.

Method for hydroxylation of phenol

A method for producing a ketoxime is provided. The method includes the step of performing a reaction of a nitrogen-containing compound, ketone and an oxidant by using a titanium-silicon molecular sieve as a catalyst, so as to form the ketoxime, thereby increasing the yield and selectivity of the ketoxime.

Method for producing ketoxime

A method for producing an epoxide is provided. The method includes a step of performing a reaction of an olefine compound and an oxidant to form the epoxide by using a titanium-silicon molecular sieve as a catalyst, thereby increasing the conversion rate of the oxidant and the yield of the epoxide.

Method for producing epoxide

The present invention provides a catalyst composition and a method for preparing an amide. The catalyst composition of the present invention including a hydroxylamine salt, sulfuric acid, and a nitrogen-containing heterocyclic compound is used for catalyzing a ketoxime to form an amide in the Beckman rearrangement reaction. The preparation of an amide by using the catalyst composition of the present invention has high conversion rate of a ketoxime, high selectivity of an amide and high tolerance to water.

Catalyst composition and method for preparing amide

A method for preparing an epoxide is disclosed. The method for preparing an epoxide includes the step of performing a reaction of an alkene and oxidant in the presence of a Ti&#x2014;Si molecular sieve as a catalyst, and increases the conversion rate of hydrogen peroxide and the yield of the epoxide.

Method for preparing epoxides

A method for producing an epoxide is disclosed. The method includes performing a reaction of an olefin compound and an oxidant by using a titanium-silicon molecular sieve as a catalyst, in the presence of a silicon oxide containing an alkaline earth metal as a coagent. The selectivity and yield of epoxide are increased by using a silicon oxide containing an alkaline metal as a coagent.

Method for preparing epoxide

A method for preparing a pyruvate ester is disclosed. In the method of the present invention, a lactate ester is oxidized by hydrogen peroxide in the presence of a Ti&#x2014;Si molecular sieve catalyst. In the present invention, the Ti&#x2014;Si molecular sieve catalyst is easily filtered and recycled, the reaction conditions are mild due to the usage of hydrogen peroxide, the process is simple and easily performed, the conversion rate of the lactate ester is high, and the selectivity of the pyruvate ester is high.

Method for preparing pyruvate ester

The present invention provides a method for preparing an amide. The method includes the steps of performing in a reactor including a catalyst composition having a nitrogen-containing heterocyclic compound and sulfuric acid Beckman rearrangement of a ketoxime to form a product stream having the amide, wherein a molar ratio of the nitrogen-containing heterocyclic compound to the sulfuric acid is from 1:1 to 1:8; and separating an organic phase having the amide and an aqueous phase having the catalyst composition from the product stream. The present invention facilitates the regeneration of the catalyst composition with low water content, so as to increase the conversion rate of a ketoxime and the selectivity of an amide.

Catalyst composition and method for preparing amide using the same

The present invention provides a method for preparing a large-sized titanium-silicalite molecular sieve, and a method for preparing cyclohexanone oxime using the large-sized titanium-silicalite molecular sieve. The method for preparing a large-sized titanium-silicalite molecular sieve includes preparing a mixture of a titanium source, a silicon source and a template agent; heating the mixture to form a gel mixture; mixing a colloidal silica with the gel mixture; heating the gel mixture mixed with the colloidal silica in a water bath; and calcining the gel mixture mixed with the colloidal silica. In the present invention, the average particle size of the large-sized titanium-silicalitem molecular sieve is more than 10 um, and the particle size distribution is centralized, so as to avoid the formation of titanium-oxygen-titanium bonding. The method for preparing cyclohexanone oxime using the large-sized titanium-silicalite molecular sieve results in high conversion rate, high selectivity and easy recovery.

Method for preparing large-sized titanium-silicalite molecular sieve and method for preparing cyclohexanone oxime using the molecular sieve

The present invention provides a method for preparing a titanium-silicalite molecular sieve, and a method for preparing cyclohexanone oxime using the titanium-silicalite molecular sieve. The method for preparing a titanium-silicalite molecular sieve includes the steps of preparing a mixture of a titanium source, a silicon source and a template agent, wherein the titanium source has a structure of formula (I); heating the mixture to form a gel mixture; mixing the gel mixture with water; heating the gel mixture mixed with the water in a water bath; and calcining the gel mixture mixed with the water. The method using the titanium-silicalite molecular sieve for preparing cyclohexanone oxime results in high conversion rate and high selectivity.

Method for preparing titanium-silicalite molecular sieve and method for preparing cyclohexanone oxime using the molecular sieve

The present invention provides a method for separating an amide from an amino acid ionic liquid. The method includes the step of providing a polar solvent and an extracting agent to the amino acid ionic liquid, so as to separate the amide from the amino acid ionic liquid. In the method of the present invention, there is no need to add ammonium for neutralization, such that no byproduct, ammonium sulfate, is formed. In addition, after the amide is separated from the amino acid ionic liquid, the amino acid ionic liquid can be recycled.

Method for separating amide from amino acid ionic liquid

Provided is a method for manufacturing hydroxylamine. In this method, an aqueous reaction medium containing acidic buffer agent and nitrate ions in the presence of a limited amount of metal impurities such as Fe or Cu is introduced into a hydroxylamine synthesis reactor in the presence of catalyst to proceed hydroxylamine synthesis by reduction of nitrate ions with hydrogen gas as reducing agent in the aqueous reaction medium to produce hydroxylamine. The reaction is processed in the aqueous reaction medium with a limited amount of metal impurities or even without metal impurities, such that the selection rate of the hydroxylamine product is increased.

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Taipei, Taiwan

Cheng-Fa Hsieh