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Aerosol processing method for controlled coating of surface materials to generate catalysts

A catalyst and aerosol technology, applied in the field of synthesis of catalytic materials, can solve the problems of limited properties of metathesis catalysts and difficult access to metal oxides

Inactive Publication Date: 2020-10-20
SAUDI ARABIAN OIL CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, wet impregnation or the inclusion of metal oxides into catalyst premixes is limited because most of the metal oxides are incorporated in the inner portion of the catalyst support material and the reactants of the metathesis reaction are likely to have less access to the majority Metal oxide
Additionally, control over the properties of the resulting metathesis catalyst is limited

Method used

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  • Aerosol processing method for controlled coating of surface materials to generate catalysts
  • Aerosol processing method for controlled coating of surface materials to generate catalysts
  • Aerosol processing method for controlled coating of surface materials to generate catalysts

Examples

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example

[0110] The following examples illustrate the preparation of various metathesis and isomerization catalysts. These metathesis and isomerization catalysts were then used for the synthesis of propylene from the stream of 2-butene and nitrogen in a fixed bed reactor operating at 580°C.

example 1

[0112] Preparation of metathesis catalysts with a layer of tungsten oxide deposited on the surface.

[0113] A catalyst support precursor mixture was prepared by adding 37.1 grams of fumed silica to 800 grams of deionized water to produce a catalyst support precursor mixture having 4.5 wt.% fumed silica. The fumed silica used was obtained from Evonik Industries (Evonik Industries) 380 fumed silica. The catalyst support precursor mixture was sonicated for 20 minutes prior to each experiment. The catalyst support precursor mixture is then aerosolized into a fine mist of micron-sized droplets using an ultrasonic transducer.

[0114] The aerosolized catalyst support precursor mixture is then conveyed to an aerosol processing system comprising a first furnace and a second furnace in series with and downstream of the first furnace. The first furnace (first heated zone) was configured to form agglomerated spherical particles of fumed silica from the aerosolized catalyst support p...

example 3

[0127] Evaluation of the performance of the metathesis catalysts of Example 1 and Comparative Example 2 for the metathesis of butene to produce propylene

[0128] The performance of the metathesis catalysts of Example 1 and Comparative Example 2 in the metathesis of 2-butene to propylene was evaluated. The performance of each of the example metathesis catalysts was tested in a fixed bed reactor for the conversion of a 2-butene stream to propylene. Fixed bed flow reactor systems have quartz tubes with beds of metathesis and isomerization catalysts disposed between layers of quartz wool. Each of the metathesis catalysts to be tested was mounted in series in quartz tubes as a bed of metathesis and isomerization catalysts disposed between layers of quartz wool. Each metathesis catalyst was tested in turn to provide performance data for each metathesis catalyst. Each metathesis catalyst was first activated at 580° C. for 1 hour under a nitrogen flow of 0.005 liters per minute (L / ...

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Abstract

A method of producing a catalyst comprises generating an aerosolized flow of catalyst support particles; heating a catalytically active compound precursor to produce a catalytically active compound precursor vapor; contacting the aerosolized flow of catalyst support particles with the catalytically active compound precursor vapor; and condensing the catalytically active compound precursor onto thecatalyst support particles to produce the catalyst comprising catalytically active compound deposited on surfaces of the catalyst support particles. The method may further comprise aerosolizing a catalyst support precursor mixture; drying the aerosolized catalyst support precursor mixture in a first heating zone to form an aerosolized flow of catalyst support particles; and contacting the catalystsupport particles with a catalytically active compound precursor vapor in a second heating zone to form the catalyst comprising the layer of the catalytically active compound deposited on surfaces ofthe catalyst of catalyst support particles.

Description

[0001] This application is a divisional application of the Chinese national phase application corresponding to the PCT international application PCT / US2018 / 046696 (application number is 201880051457.1, and the title of the invention is "Aerosol treatment method for controlled coating of surface substances to generate catalyst") . [0002] Cross References to Related Applications [0003] This application claims a U.S. provisional patent entitled "AEROSOL PROCESSING METHOD FOR CONTROLLED COATING OFSURFACE SPECIES TO GENERATE CATALYSTS" filed on August 17, 2017 Priority to Application Serial No. 62 / 546,765, the entire contents of which are incorporated by reference into this disclosure. technical field [0004] Embodiments of the present disclosure relate generally to the synthesis of catalytic materials. Background technique [0005] The demand for propylene has increased dramatically in recent years to meet the growing market demand for polypropylene, propylene oxide, and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J37/02C07C6/02B01J23/38B01J23/24B01J23/32B01J23/30C07C11/06B01J37/08B01J35/00B01J37/00
CPCB01J23/32B01J21/12B01J37/08B01J23/24C07C6/04B01J21/08C07C11/06B01J23/30B01J37/0054B01J37/0217B01J23/38B01J37/0232B01J37/0221C07C2521/08C07C2523/30B01J35/397B01J35/393B01J2235/15B01J2235/00B01J35/45Y02P20/52B01J35/50
Inventor 马克西姆·布霍夫科米歇尔·奥斯特拉特
Owner SAUDI ARABIAN OIL CO