Industrial Technology Research Institute

Other

Xintec Corporation

Kuo-Ching Wu

Hsi-Yen Hsu

Po-Yu Chen

Wen-Chyi Lin

Chiou-Hwang Lee

Ching-Tang Lin

Yu-Shan Chao

Chiung-Hui Huang

Chu-Chang Dai

Chih-Yao Yang

Yu-Lan Tung

Hsu-Kai Chang

Shiao-Jung Chu

Chao-Huang Chen

Yuan-Peng Du

Wen-Tzong Liu

Tsou-Tso Tsai

Chin-Shu Tsai

Rey-Yue Chang

Tzung-Heng Tsai

Jyh-Chang Dai

Chion-Hwang Lee

A method for selectively chemically reducing COto form CO includes providing a catalyst, and contacting Hand COwith the catalyst to chemically reduce COto form CO. The catalyst includes a metal oxide having a chemical formula of FeCoMnO, in which 0.7&#x2264;x&#x2264;0.95, 0.01&#x2264;y&#x2264;0.25, and z is an oxidation coordination number.

Method for selectively chemically reducing COto form CO

A method of forming dialkyl carbonate is provided, which includes introducing carbon dioxide into a catalyst to form dialkyl carbonate, wherein the catalyst is formed by activating a catalyst precursor using alcohol, wherein alcohol is R&#x2014;OH, and Ris Calkyl group or Caryl or heteroaryl group. The catalyst precursor is formed by reacting Sn(R)(L)and Ti(OR), and Sn(R)(L)and Ti(OR)have a molar ratio of 1:2 to 2:1. Ris Calkyl group, Ris H or Calkyl group, and L is O&#x2014;(C&#x2550;O)&#x2014;R, and Ris Calkyl group. The dialkyl carbonate is 

Catalyst precursor

Catalyst and precursor thereof and method of forming dialkyl carbonate

A catalyst is provided. The catalyst includes a carrier and a metal. The carrier is represented by a formula: MAlO, where M is an alkaline earth metal, and x is between 0.09 and 0.24. The metal is loaded on the carrier. A method for manufacturing the catalyst is also provided.

Catalyst and manufacturing method thereof

A spray coater is used to spray a photoresist on a front surface of a wafer. The spray coater includes a vacuum chuck, a flow guiding ring, and a positioning ring. The vacuum chuck has a top surface and a side surface adjacent to the top surface. The wafer is located on the top surface and protrudes from the top surface of the vacuum chuck. The flow guiding ring is disposed around the vacuum chuck and has a groove. The wafer protruding from the top surface covers the flow guiding ring, and an opening of the groove faces a back surface of the wafer opposite to the front surface. The positioning ring is disposed around the flow guiding ring, such that the flow guiding ring is between the positioning ring and the side surface of the vacuum chuck.

Spray coater and ring-shaped structure thereof

A catalyst is provided. The catalyst includes a carrier and a metal Pd. The carrier is represented by a formula: MAlO, where M is an alkaline earth metal, and x is between 0.09 and 0.24. The metal Pd is loaded on the carrier. A method for manufacturing the catalyst and a method for manufacturing a hydrogenated bisphenol A or derivatives thereof using the catalyst are also provided.

Catalyst and manufacturing method thereof and method for manufacturing hydrogenated bisphenol A or derivatives thereof using the same

The disclosure provides a process for hydrogenation of polycarboxylic acids or derivatives thereof, including: hydrogenation of polycarboxylic acids or derivatives thereof in the presence of a catalyst, wherein the catalyst includes an active metal and a support, the support includes a Group IIA element and a Group IIIA element, and the active metal includes a Group VIIIB element.

Process for hydrogenation of polycarboxylic acids or derivatives therof

The present invention discloses a method for removing carbon monoxide (CO) from a gas mixture containing CO including contacting the gas mixture with a nano-gold catalyst to reduce the CO content in the gas mixture by CO selective adsorption/oxidation, water gas shift reaction or CO selective oxidation reaction. The nano-gold catalyst includes a solid support and gold deposited on the support, wherein the deposited gold has a size less than 10 nm, and the support is a mixed metal hydroxide and oxide having the following formula:M(OH)qOyWherein M is Ti, Fe, Co, Zr, or Ni; q is 0.1-1.5; and q+2y=z, wherein z is the valence of M.

Method for the removal of carbon monoxide from a gas mixture

The present invention discloses a nano-gold catalyst including a solid carrier and gold deposited on the carrier, wherein the deposited gold has a size less than 10 nm, and the carrier is a mixed metal hydroxide and oxide having the following formula:M(OH)qOyWherein M is Ti, Fe, Co, Zr, or Ni; q is 0.1-1.5; and q+2y=z, wherein z is the valence of M. The present invention also discloses a preparation process of the nano-gold catalyst.

Nano-gold catalyst and process for preparing the same

A process for preparing carboxylic esters. A catalytic distillation column filled with acidic catalyst in solid phase is utilized. Alcohol is fed from the bottom of the catalytic distillation column, and carboxylic acid or carboxylic anhydride is fed from the top of the catalytic distillation column in such a manner that the carboxylic acid or carboxylic anhydride can remain in the catalytic distillation column for a sufficient time to cause the esterification to produce the carboxylic ester and water. An esterification pre-reactor can be connected in series with the catalytic distillation column to facilitate the esterification.

Process for preparing a carboxylic ester

A method for producing maleimides. The method comprises reacting maleic anhydride and a primary amine at 100-180&deg; C. in an organic solvent using a solid acidic catalyst, and purifying the maleimide produced therefrom by extraction and crystallization. The molar ratio of the primary amine to maleic anhydride is about 0.8-1.6. With the present invention, high production yield with high purity of maleimides can be achieved. In addition, the solid acidic catalyst can be easily separated and recycled for subsequent use. Thus, the present invention provides a number of distinct advantages, including substantially improved yield, conveniently reusable catalyst, reduced waste disposal and lower costs.

Method for producing maleimides

The present invention provides a process for preparing a pentenoic ester, comprising heating a 3-, 4-formylvaleric ester or mixtures thereof at 50&deg; C. to 400&deg; C. in the presence of a supported noble metal catalyst. The noble metal catalyst is supported on a mixed oxide (M ) (M ) (M ) P Al SiO , wherein M is an alkali metal, M is an alkaline earth metal, M is a Group IVB metal, a&equals;0.5&tilde;1.5, b&equals;0.2&tilde;0.8, c&equals;0.2&tilde;0.8, d&equals;2&tilde;8, e&equals;3&tilde;10, and x is the stoichiometric value. By means of the specific supported catalyst of the present invention, the selectivity of the 3- and 4-pentenoic esters can be increased and that of the 2-pentenoic ester can be greatly decreased.

Process for preparing pentenoic esters from formylvaleric esters using a mixed oxide supported noble metal catalyst

An improved process for the preparation of acetic esters is disclosed. It comprises a fixed bed reaction and a catalytic distillation. The fixed bed reaction comprises the steps of: (a) charging acetic acid and alcohol into a fixed bed reactor under a predetermined reaction condition; and (b) reacting the esterification reactants in the fixed bed reactor. The fixed bed reactor contains acidic catalysts that are present in a solid phase, and the reaction condition is controlled such that (i) the reactants and the products co-exist in a gas-liquid two-phase equilibrium in the fixed bed reactor and that (ii) at least one component of the reactants is present in one phase and at least one component of the products is present in another phase. The catalytic distillation comprises the steps of: (1) charging acetic acid from top of a catalytic distillation column and the reaction products from the fixed bed reactor from the bottom of the catalytic column in a counter-flow manner; and (c) continuously removing acetic ester and water from the top of the catalytic distillation column, and continuously removing acetic acid from the bottom of the catalytic distillation column. The acetic acid removed from the catalytic distillation column is fed into the fixed bed reactor. Very high alcohol conversion and essentially alcohol free product can be obtained at substantially reduced height of the catalytic distillation column.

Catalytic processes for the preparation of acetic esters

An improved process for the esterification of carboxylic acid and alcohols into carboxylic ester is disclosed. It comprises the steps of: (a) charging the esterification reactants into a fixed bed reactor under a predetermined reaction condition; and (b) reacting the esterification reactants in the fixed bed reactor. The fixed bed reactor contains acidic catalysts that are present in a solid phase, and the reaction condition is controlled such that (i) the reactants and the products co-exist in a gas-liquid two-phase equilibrium in the fixed bed reactor and that (ii) at least one component of the reactants is present in one phase and at least one component of the products is present in another phase. Because a phase change is always taking place concurrently with the esterification reaction; the reaction stream is maintained at a relatively uniform temperature. This greatly reduces the chances of catalyst poisoning and minimizes the formation of undesired by-products such as polymers/oligmers and ethers, which are often produced at high temperatures. The concurrent phase change also contributes to the extremely high reaction yield and selectivity, typically better than 90%, observed in the present invention.

Catalytic processes for esterification of carboxylic acids

A one-step process for selective production of methyl isobutyl ketone includes reacting in the vapor/liquid phase acetone and hydrogen at a temperature of about 100.degree. to 300.degree. C. and a pressure of about 100 to 1000 psig, in the presence of a modified ZSM-5 catalyst having a molar ratio of SiO.sub.2 /Al.sub.2 O.sub.3 from about 20:1 to 680:1, the catalyst being prepared by treating a ZSM-5 zeolite with an organic acid having a pKa of 2 to 5, ion-exchanging or impregnating the ZSM-5 zeolite with a cation selected from the group consisting of palladium cation, platinum cation, copper cation and nickel cation, and activating the resultant catalyst in a reducing atmosphere.

Growing community of inventors

Hsinchu, Taiwan

Kuo-Ching Wu