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Method for manufacturing unsaturated hydrocarbon, and dehydrogenation catalyst used in said method

A manufacturing method and unsaturated technology, which is applied in the direction of catalysts, molecular sieve catalysts, carbon compound catalysts, etc., can solve the problems of laborious process design, etc., and achieve the effects of less frequency, long catalytic life and excellent operability

Inactive Publication Date: 2013-04-24
MITSUI CHEM INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in order to continuously remove the catalyst required for catalyst regeneration from the reaction system, the reaction system needs to be in the form of a moving bed or a fluidized bed, and these have the problem of requiring great effort in process design.

Method used

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  • Method for manufacturing unsaturated hydrocarbon, and dehydrogenation catalyst used in said method
  • Method for manufacturing unsaturated hydrocarbon, and dehydrogenation catalyst used in said method
  • Method for manufacturing unsaturated hydrocarbon, and dehydrogenation catalyst used in said method

Examples

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Embodiment

[0119] Examples are shown below to describe the present invention in more detail, but the present invention is not limited to these Examples.

Synthetic example 1

[0120] Preparation of a silicate (zeolite) from which part of the boron atom has been removed

[0121] 9.23 g of a borosilicate having an MFI structure containing 3200 ppm of boron atoms prepared by the method of Synthesis Example 11 described later was put into a glass flask equipped with a cooling tube. Then, 900 ml of 3N nitric acid aqueous solution was added to the said flask, and it heated up to 100 degreeC, stirring. After the water started to reflux, the reaction was carried out for 18 hours. After 18 hours, the slurry was cooled, filtered using a membrane filter (0.5 μm), and the filter cake was washed with 300 ml of distilled water.

[0122] For the obtained filter cake, after repeating the above-mentioned treatment (addition of nitric acid aqueous solution, reaction of reflux water, cooling, filtering and washing the filter cake with distilled water), the filter cake was fired at 120° C. in air for 4 hours, further Calcination was carried out at 540° C. for 6 hour...

Synthetic example 2

[0124] Preparation of zinc-loaded silicate (zeolite)

[0125] 0.33 g of an aqueous solution containing 0.0810 g (0.272 mmol) of zinc nitrate hexahydrate was added to 1 g of the silicate obtained in Synthesis Example 1, and zinc ions were impregnated by the Incipient-Wetness method.

[0126] After the solution was impregnated, the powder was mixed well, and further fired in air at 120° C. for 3 hours and at 500° C. for 4 hours to prepare a zinc-loaded silicate.

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Abstract

The invention provides a process for producing an unsaturated hydrocarbon by dehydrogenating a hydrocarbon into a corresponding unsaturated hydrocarbon with use of a nontoxic catalyst having a long catalytic life.The process for producing unsaturated hydrocarbons includes a step of dehydrogenating a hydrocarbon into a corresponding unsaturated hydrocarbon by contacting the hydrocarbon with a catalyst A that is obtained bysupporting zinc and a Group VIIIA metal on a silicate obtained by removing at least part of the boron atoms from a borosilicate.

Description

technical field [0001] The present invention relates to a method for producing unsaturated hydrocarbons corresponding to the hydrocarbons by contacting the hydrocarbons with a specific dehydrogenation catalyst, and a dehydrogenation catalyst usable for the production method. Background technique [0002] Unsaturated hydrocarbons obtained by dehydrogenation of hydrocarbons, especially monoenes and dienes, are useful as base materials in the petrochemical industry. Examples thereof include propylene, 1-butene, 2-butene, isobutylene, styrene, and butadiene. [0003] The aforementioned propylene is an important industrial raw material used as a synthetic raw material for acrylonitrile, polypropylene, ethylene-propylene rubber, propylene oxide, acetone, isopropanol, octanol, and the like. [0004] The aforementioned 1-butene and 2-butene are raw materials for the production of propylene through a metathesis reaction with ethylene, and butadiene has been in demand in recent years...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C5/333B01J29/86C07C11/08C07C11/09C07C11/167C07B61/00
CPCC07C2529/70B01J29/04C07C5/3337B01J2229/16B01J2229/20B01J2229/22B01J2229/37C07C5/325C10G45/00C10G2400/20B01J29/86C07C2523/38B01J2229/18C10G2300/1081C07C2523/42C07C5/3335C10G2400/22B01J29/44C07C2529/44C07C2529/86C10G35/09C10G35/095Y02P20/52C07C15/46C07C11/08C07C11/06C07C11/09C07C11/10C07C5/333C07C11/167
Inventor 帕拉·亨市川真一郎石川淳一池永裕一川原润后安康秀
Owner MITSUI CHEM INC