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Supported propane dehydrogenation catalyst and preparation method thereof

A technology for propane dehydrogenation and catalyst, which is used in catalyst activation/preparation, dehydrogenation to hydrocarbons, chemical instruments and methods, etc. Effect

Pending Publication Date: 2022-05-03
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The invention relates to a supported propane dehydrogenation catalyst and a preparation method thereof, which mainly solves the problem that the conversion rate of the catalyst prepared in the prior art is relatively low

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] (1) Weigh 10 grams of alumina carrier, add 20 ml of tartaric acid with a concentration of 0.74 g / mL and a saturated adsorption capacity (x / m) M of 0.6 as a competitive adsorbent, wherein the molar ratio of the carrier to the competitive adsorbent is 2.

[0053] (2) Fully impregnate the carrier with the above competitive adsorbent solution, the impregnation temperature is 10-50°C, and the impregnation time is 12-48 hours, so that the competitive adsorbent can fully enter the interior of the carrier.

[0054] (3) preparing 100 milliliters of concentrations is 2.1g / mL containing chromium nitrate, concentration is the solution of sodium nitrate and 0.18g / mL tin chloride of 0.07g / mL, the metal molar ratio ( sodium and tin) is 0.7.

[0055] (4) Quickly add the solution obtained in step (3) to the carrier in step (2), and then put it in an oven at 80°C, and quickly evaporate the excess water to dryness.

[0056] (5) The sample obtained in step (4) was calcined in a muffle fur...

Embodiment 2-7

[0058] Same as the examples, only different acidic species were changed as competing adsorbents.

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Abstract

The invention discloses a supported propane dehydrogenation catalyst, which mainly comprises: Cr or an oxide thereof; elements in the IA group and the IVA group of the periodic table of elements or oxides thereof. The invention also discloses a preparation method of the catalyst.

Description

technical field [0001] The invention relates to the technical field of catalysts, in particular to a supported propane dehydrogenation catalyst and a preparation method thereof. Background technique [0002] Propylene and other low-carbon olefins are important chemical raw materials. With the progress and development of modern society, their demand is increasing. Traditional propylene production methods are all obtained in the crude oil processing process. Propylene is mainly used to produce polypropylene, acrylonitrile, acrylic acid, acrolein, etc., and is the basic raw material for the three major synthetic materials (plastic, rubber and fiber). [0003] At present, the main research on dehydrogenation of low-carbon alkanes still focuses on process development and high-performance catalyst development. The research and development of traditional catalysts mainly focus on chromium-based and platinum-based catalysts, but chromium-based catalysts have serious environmental ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/26B01J37/02C07C11/06C07C5/32
CPCB01J23/26B01J23/002B01J37/0201C07C5/322C07C5/324B01J2523/00B01J2523/12B01J2523/31B01J2523/43B01J2523/67C07C11/06Y02P20/52
Inventor 吴省缪长喜洪学思姜冬宇樊志贵
Owner CHINA PETROLEUM & CHEM CORP
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