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Method for activating platinum-containing light alkane dehydrogenation catalyst

A dehydrogenation catalyst and low-carbon alkanes technology, which is applied in the direction of catalyst activation/preparation, carbon compound catalysts, catalysts, etc., can solve the problem of low conversion selectivity of platinum-containing low-carbon alkane dehydrogenation catalysts, and achieve the goal of inhibiting carbon deposition The effect of forming, promoting dehydrogenation activity, and stabilizing catalyst performance

Active Publication Date: 2017-05-03
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention mainly solves the problem of low conversion selectivity of existing platinum-containing low-carbon alkane dehydrogenation catalysts, and provides a new activation method for platinum-containing low-carbon alkane dehydrogenation catalysts

Method used

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  • Method for activating platinum-containing light alkane dehydrogenation catalyst
  • Method for activating platinum-containing light alkane dehydrogenation catalyst

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] 5.0 grams of catalyst precursor A was activated on a continuous flow quartz tube reactor miniature catalytic reaction device. Under air atmosphere, catalyst precursor A was treated at 250° C. for 1 hour, and then at 550° C. for 6 hours; Carrier gas containing 5mol% O 2 The gas flow was treated at 600°C for 4 hours, and finally with 3ppm H 2 S of H 2 The catalyst was treated with air flow at 600°C for 2 hours to obtain activated catalyst C.

Embodiment 2

[0025] 5.0 grams of catalyst precursor A was activated on a continuous flow quartz tube reactor miniature catalytic reaction device. Under air atmosphere, catalyst precursor A was treated at 250° C. for 2 hours, and then at 600° C. for 4 hours; Carrier gas containing 5mol% O 2 The gas flow was treated at 600°C for 4 hours, and finally with 3ppm H 2 S of H 2 The catalyst was treated with air flow at 600°C for 2 hours to obtain activated catalyst D.

Embodiment 3

[0027] 5.0 grams of catalyst precursor A was activated on a continuous flow quartz tube reactor miniature catalytic reaction device. Under air atmosphere, catalyst precursor A was treated at 250° C. for 1 hour, and then at 550° C. for 8 hours; Carrier gas containing 5mol% O 2 The gas flow was treated at 600°C for 4 hours, and finally with 3ppm H 2 S of H 2 The catalyst was treated with air flow at 600°C for 2 hours to obtain activated catalyst E.

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Abstract

The invention relates to a method for activating a light alkane dehydrogenation catalyst. The method mainly solves the problem that the conversion rate and selectivity of the existing platinum-containing light alkane dehydrogenation catalyst are low. The method comprises a) carrying out grading treatment on the catalyst in an air atmosphere, b) treating the catalyst containing 1 to 10mol% of O2 and 1 to 10mol% water vapor flows to promote redispersion of an active metal component Pt and a halogen Cl, and c) reducing the active metal component at 450 to 650 DEG C in a trace hydrogen sulfide / H2 reduction atmosphere so that the deactivated catalyst is completely activated. The method solves the problem and can be used in industrial production of light alkane dehydrogenation.

Description

technical field [0001] The invention relates to a method for activating a platinum-containing low-carbon alkane dehydrogenation catalyst. Background technique [0002] With the development of the chemical industry, low-carbon olefins have a wide range of uses and values ​​as important raw materials for the production of plastics, synthetic rubber, drugs, gasoline additives, ion exchange resins, detergents, fragrances and various chemical intermediates. Propylene / isobutene mainly comes from the co-production or by-product of steam cracking and fluid catalytic cracking process in refineries. With the increasing demand for low-carbon olefins, the traditional production process is difficult to meet the rapid growth of market demand. In order to meet the huge demand for low-carbon alkanes, the development of the process of producing low-carbon alkanes from low-value-added alkanes is of great significance for making full use of low-carbon alkanes to open up new sources of alkenes....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J37/08B01J37/10B01J37/18B01J37/20B01J23/62C07C5/333C07C11/06C07C11/09
CPCB01J23/626B01J37/088B01J37/10B01J37/18B01J37/20C07C5/3337C07C2521/04C07C2523/04C07C2523/06C07C2523/14C07C2523/42C07C2523/62C07C11/06C07C11/09Y02P20/52
Inventor 樊志贵吴文海曾铁强姜冬宇缪长喜
Owner CHINA PETROLEUM & CHEM CORP
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