Nippon Shokubai Co., Ltd.

Nippon Shokubai Kagaku Kogyo Co., Ltd.

The Procter Gamble Company

National Institute of Advanced Industrial Science and Technology

Hideaki Tsuneki

Masaru Kirishiki

Yoshiyuki Onda

Atusi Moriya

Michio Ueshima

Hiroshi Yoshida

Kenichi Watanabe

Tomoharu Oku

Yuuji Shimasaki

Yukio Kadono

Masanori Nonoguchi

Fumiaki Morishita

Youichi Hino

Yoshitaka Arita

Yoshiaki Urano

Hideyuki Baba

Junji Okamura

Masaki Okada

Hiroki Wakayama

Tetsuro Hayashi

Masanori Yoshimune

Dimitris Ioannis Collias

Jane Ellen Godlewski

Koichi Yamamoto

Hiroto Kasuga

Toshio Hayashi

Shigeru Shimada

Toshimitsu Moriguchi

Yutaka Morimoto

Satoshi Nakagawa

Juan Estaban Velasquez

Kimio Ariyoshi

Izuho Okada

Yasushi Sekine

Yoshiaki Hirano

Yukihiko Kakimoto

Isao Nagai

Ritsuo Kitada

Shinya Kitaguchi

Hisakazu Shindou

Hiroko Izumi

Takeo Akatsuka

Ryuji Aoki

Kenichi Tominaga

Takahiro Inagaki

Isamu Maeda

Atsushi Tachibana

Masashi Tonoya

Yukihide Hashimoto

Masatoshi Ikeda

Hironori Horie

Kohei Umehara

Koji Takeda

Motosuke Imada

Shinji Kanbara

Koji Nishi

Atsushi Mori

Kazuhiko Satoh

Teruo Kamei

Koji Shingubara

Yasuhiko Satoh

The present invention aims to provide a regeneration method capable of sufficiently restoring the catalytic performance of a solid catalyst used in a dehydration reaction of lactic acid and derivatives thereof. The present invention relates to a method for regenerating a solid catalyst used in a dehydration reaction of lactic acid and derivatives of lactic acid, the method including a contacting step of bringing a solid catalyst containing a component that forms a molten salt in the presence of steam into contact with oxygen and steam under pressure.

Regeneration method of solid catalyst

Disclosed is a catalyst which can be used in the process for producing hydrogen by decomposing ammonia, can generate heat efficiently in the interior of a reactor without requiring excessive heating the reactor externally, and can decompose ammonia efficiently and steadily by utilizing the heat to produce hydrogen. Also disclosed is a technique for producing hydrogen by decomposing ammonia efficiently utilizing the catalyst. Specifically disclosed is a catalyst for use in the production of hydrogen, which is characterized by comprising an ammonia-combusting catalytic component and an ammonia-decomposing catalytic component. Also specifically disclosed is a catalyst for use in the production of hydrogen, which is characterized by comprising at least one metal element selected from the group consisting of cobalt, iron, nickel and molybdenum.

Catalyst for production of hydrogen and process for producing hydrogen using the catalyst, and catalyst for combustion of ammonia, process for producing the catalyst and process for combusting ammonia using the catalyst

A method which can efficiently produce ammonia at low temperature and low pressure and which can respond flexibly to an unsteady electrical power supply condition. In addition, a catalyst which is excellent in activity for synthesizing ammonia and which is used in a method for efficiently producing ammonia without regard to supply condition and supply location of electrical power. The method is characterized in that a reactor for synthesizing ammonia is used, and the reactor has a pair of electrodes, a voltage applying means for applying voltage between the electrodes, a catalyst between the electrodes, a raw material gas inlet port, and an ammonia-containing gas discharge port, and including introducing at least nitrogen and hydrogen as a raw material gas into the reactor for synthesizing ammonia, and applying a voltage to the electrodes of the reactor for synthesizing ammonia, wherein electrical discharge does not occur by the voltage.

Ammonia synthesis method and catalyst for ammonia synthesis

A process for producing acrolein, comprising: a glycerin dehydration step of conducting dehydration reaction of glycerin to obtain an acrolein-containing gas; a partial-condensation step of cooling the acrolein-containing gas to condense a part of acrolein, water and a high-boiling substance contained in the acrolein-containing gas, thereby obtaining a purified gas and a condensate; and a separation step of separating the purified gas from the condensate; wherein a polymerization inhibitor is added to the acrolein-containing gas or the condensate in the partial-condensation step.

Process for producing acrolein, acrylic acid and derivatives thereof

An alternative method for efficiently producing lactic acids from a carbohydrate-containing raw material such as cellulose is provided. The method for producing lactic acid and/or lactic acid ester comprises performing heat treatment on a carbohydrate-containing raw material in a solvent containing a catalyst, wherein the catalyst is at least one type of compound selected from the group consisting of a tin compound, an indium compound, and a rhenium compound, and the solvent contains water and/or alcohol.

Method for producing lactic acids from carbohydrate-containing raw material

In the method of the present invention for producing fatty acid alkyl ester and/or glycerin, as a heat source for an alcohol refining step of refining alcohol from unreacted alcohol that remains without reacting in a first reaction step, at least a part of heat of the unreacted alcohol is used. This allows reducing costs in production of fatty acid alkyl ester and/or glycerin over a solid catalyst.

Method for producing fatty acid alkyl ester and/or glycerin

The present invention provides a process for producing acrolein, which exhibits a prolonged catalyst life, low energy consumption, and excellent efficiency, and which is earth-conscious, and a glycerin-containing composition which can preferably be used even in this process. The process for producing acrolein is one which includes bringing a raw material gas containing glycerin gas into contact with a solid acid catalyst in a reactor, and the partial pressure of the glycerin gas in the raw material gas is set to be from 0.01 to 30 kPa. The glycerin-containing composition is for use in a process for producing acrolein using a solid catalyst and includes a fatty acid and/or a fatty acid ester, and a total mass of the fatty acid and the fatty acid ester is from 0.001% to 5% by mass, relative to the glycerin.

Process for producing acrolein and glycerin-containing composition

The present invention provides a process for more efficiently producing an &#x3b1;-hydroxycarboxylic acid ester wherein side reactions due to the &#x3b1;-hydroxycarboxylic acid ester are inhibited or prevented in comparison with prior art production processes. The invention provides a process for producing an &#x3b1;-hydroxycarboxylic acid ester comprising Steps 1 to 3: Step 1. reacting, in the presence of oxygen, (i) a 1,2-diol with a 1,2-diol or (ii) a 1,2-diol with an alcohol to obtain a reaction product containing an &#x3b1;-hydroxycarboxylic acid ester; Step 2. separating the &#x3b1;-hydroxycarboxylic acid ester from the reaction product obtained in Step 1 by distillation under reduced pressure; and Step 3. feeding Step 1 with a mixture obtained by partially or entirely removing water from the reaction product, wherein the mixture contains an unreacted 1,2-diol and/or alcohol.

Method for producing &#x3b1;-hydroxycarboxylate

A method for producing an alkanolamine from liquid ammonia in the presence of a solid catalyst efficiently with both the cost of equipment and the expense of utility repressed is provided. After not less than 60% of the ammonia has been recovered as liquid ammonia from the product solution, the remaining ammonia is recovered as aqueous ammonia solution through the steps of stripping and absorption in water. Separately, a dialkanolamine can be selectively and efficiently produced by circulating part of the product solution to the reactor.

Method for production of alkanolamine and apparatus therefor

In producing alkanolamines by use of a microporous material as a catalyst, the difficulty in industrially performing the production because of the short lifetime of the catalyst is resolved. A process of regenerating the catalyst by removing an organic substance deposited on the catalyst by means of decomposing and/or extracting the substance is introduced, and thereby steady production is carried out substantially over the long term by switching the reaction and the regenerating processes.

Method of producing alkanolamines and apparatus for producing same

A method for producing a molding of binderless zeolite by exposing to saturated steam a precursor having a tetraalkylammonium salt component, an alkali metal component, and a metal component incorporated in the crystal skeleton of zeolite supported on a molding using silica as a main component, the molding of binderless zeolite, and use of the molding as a catalyst for the production of an alkanolamine.

Molding of binderless zeolite, method for production thereof, and uses thereof

Selective production of a dialkanolamine is attained by controlling the volume preceding the entrance to a catalyst bed and the temperature prevailing under respectively fixed levels subsequent. to the mixture of an alkylene oxide thereby repressing a reaction occurring in the absence of a catalyst and curbing the formation of trialkanolamine. The reactant fluid is prevented from generating a channeling by disposing an exportable structure in a reactor thereby creating the state of a false shell-and-tube type reactor. The reaction is initiated with the inlet temperature set at a higher level than the prescribed level and the alkylene oxide concentration set at a lower level than the prescribed level and thereafter the inlet temperature and the alkylene oxide concentration are gradually changed toward the respectively prescribed levels.

Reaction apparatus for production of alkanolamine

The present invention provides a process for producing a (poly)alkylene glycol monoalkyl ether with high selectivity and high yield. In this process, the (poly)alkylene glycol monoalkyl ether is produced by reacting an olefin and a (poly)alkylene glycol in the presence of a catalyst, wherein: 1) a crystalline metallosilicate is used as the catalyst, and at least a portion of the used catalyst is regenerated, and the regenerated catalyst is recycled as the catalyst for the reaction; or 2) the reaction between the olefin and the (poly)alkylene glycol is carried out in the presence of either or both of a (poly)alkylene glycol dialkyl ether and an alcohol.

Production process for (poly)alkylene glycol monoalkyl ether

The invention provides a process for producing dialkanolamines through amination of alkylene oxide with ammonia at liquid phase, in which side formation of trialkanolamines is inhibited and dialkanolamines can be produced with high selectivity and high efficiency. Said process is carried out in the presence of a catalyst which possesses such reaction characteristics that render the rate constant &agr; of the reaction between ammonia and alkylene oxide not less than 0.10, when the reaction rate constant between monoalkanolamine and alkylene oxide is 1, and the rate constant &bgr; of the reaction between dialkanolamine and alkylene oxide not more than 0.7, when the reaction rate constant between monoalkanolamine and alkylene oxide is 1.

Process for producing dialkanolamines

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Tokyo, Japan

Hideaki Tsuneki