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Catalyst for conversion of organic oxy-compound into olefin molecular sieve and its preparation method and method for preparing olefin from organic oxy-compound

A technology of molecular sieves and compounds, which is applied in the field of organic oxygenates to olefins, organic oxygenates to olefins molecular sieve catalysts and their preparation, and organic oxygenates. It can solve the problems of unsuitable catalysts and low selectivity of propylene and butene. , to achieve the effect of slow coking and deactivation speed, improved selectivity, excellent activity and service life

Active Publication Date: 2017-12-26
CHNA ENERGY INVESTMENT CORP LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] The purpose of the present invention is to overcome the defects in the prior art that the selectivity of methanol conversion to propylene and butene is low and the prepared catalyst is not suitable for fluidized bed systems, and to provide a molecular sieve catalyst for the production of olefins from organic oxygen-containing compounds and its Process for the preparation and process of producing olefins from organic oxygenates

Method used

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  • Catalyst for conversion of organic oxy-compound into olefin molecular sieve and its preparation method and method for preparing olefin from organic oxy-compound
  • Catalyst for conversion of organic oxy-compound into olefin molecular sieve and its preparation method and method for preparing olefin from organic oxy-compound
  • Catalyst for conversion of organic oxy-compound into olefin molecular sieve and its preparation method and method for preparing olefin from organic oxy-compound

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Experimental program
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Effect test

preparation example Construction

[0038] The invention provides a method for preparing a molecular sieve catalyst for producing olefins from an organic oxygen-containing compound, the method comprising:

[0039] (1) mixing the first binder with an acid, so that the first binder is peptized;

[0040] (2) mixing the second binder with the first binder sol prepared in step (1) to obtain a mixed binder sol;

[0041] (3) Mix high-silicon ZSM-5 molecular sieve, mixed binder sol and carrier and perform aging treatment;

[0042] (4) The slurry obtained by aging treatment is spray-dried and molded and roasted successively;

[0043] The weight ratio of the ZSM-5 molecular sieve, the first binder, the second binder, the carrier and the acid is 1:0.1-0.5:0.05-0.3:0.5-1.5:0.01-0.25.

[0044] Among them, the preparation method of high-silicon ZSM-5 molecular sieve includes: sequentially mixing liquid alkaline silicon source, aluminum source, ZSM-5 molecular sieve seed crystal, template agent, alkali, urea and water, aging...

Embodiment

[0086] The determination of X-ray diffraction (XRD) crystal phase diagram was performed on a Bruker D8ADVANCE X-ray diffractometer.

[0087] The scanning electron microscope used was a FEI Company Nova NanoSEM 450 model.

preparation example 1

[0089] (1) Weigh 20g of urea (AR Sinopharm Chemical Reagent Co., Ltd.) and 0.9g of seed crystals (ZSM-5 molecular sieve, the same as other examples), add 54g of deionized water to mix, stir well and then add 1.824g of NaOH (AR Sinopharm Group Chemical Reagent Co., Ltd.) and 49.36g tetrapropylammonium hydroxide (25% aqueous solution, industrial grade), after stirring for 1h, add 0.08g sodium aluminate (AR Sinopharm Group Chemical Reagent Co., Ltd.), continue stirring for 10min and add 60.8 g silica sol (30%, industrial grade, pH value is 9), that is, the molar ratio of liquid alkaline silicon source, aluminum source, templating agent, alkali, urea and water is 1:0.0016:0.2:0.15:0.9:24.4, ZSM-5 Molecular Sieve Seed and SiO in Liquid Alkaline Silicon Source 2 The weight ratio of = 5:100. Aging of the obtained mixed solution at room temperature for 16 hours, the aged reaction solution was transferred into a high-pressure reactor, crystallized at 165°C for 24 hours, washed 5 times...

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Abstract

The invention relates to the field of conversion of an organic oxy-compound into an olefin catalyst. The invention discloses a catalyst for conversion of an organic oxy-compound into an olefin molecular sieve, a preparation method of the catalyst and a method for preparing an olefin from an organic oxy-compound. The preparation method of the catalyst comprises mixing a first binder and an acid to obtain first binder sol, mixing a second binder and the first binder sol to obtain mixed binder sol, mixing a high-silicon ZSM-5 molecular sieve, the mixed binder sol and a carrier, carrying out aging treatment and orderly carrying out spray-drying formation and roasting on the slurry to obtain the catalyst for conversion of an organic oxy-compound into an olefin molecular sieve. The invention also relates to the catalyst for conversion of an organic oxy-compound into an olefin molecular sieve and the method for preparing an olefin. The catalyst has excellent activity and a long service life, is suitable for a fluidized bed reactor and can remarkably improve the selectivity of light olefins in the reaction of preparation of olefins from organic oxy-compounds.

Description

technical field [0001] The invention relates to the field of catalysts for converting organic oxygen-containing compounds, such as methanol and / or dimethyl ether, to olefins, especially low-carbon olefins, such as propylene and / or butene, in particular, to a molecular sieve for producing olefins from organic oxygen-containing compounds Catalyst and its preparation method and method for producing olefins from organic oxygen-containing compounds. Background technique [0002] Trienes and triphenyls are important basic raw materials for the modern chemical industry. The existing low-carbon olefin production technology relies heavily on petroleum resources, and the traditional methods for preparing ethylene, propylene, and butene are light oil (naphtha, light diesel oil) cracking technology and refinery by-products. In recent years, the total amount of C4 resources in my country has increased with the development of oil refining, steam cracking to ethylene production capacity a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J29/40C07C11/06C07C11/08C07C1/20
CPCC07C1/20B01J29/40B01J2229/38B01J2229/10B01J2229/12B01J35/615C07C11/06C07C11/08Y02P20/52
Inventor 邢爱华张新锋姜继东冯琦瑶
Owner CHNA ENERGY INVESTMENT CORP LTD
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