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Catalyst for propane dehydrogenation and preparation method

A propane dehydrogenation and catalyst technology, applied in the direction of catalysts, carbon compound catalysts, chemical instruments and methods, etc., can solve the problem of low activity of propane dehydrogenation catalysts

Active Publication Date: 2021-10-01
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] One of the technical problems to be solved by the present invention is the low activity of propane dehydrogenation catalysts in the prior art, and a propane dehydrogenation catalyst is provided

Method used

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  • Catalyst for propane dehydrogenation and preparation method
  • Catalyst for propane dehydrogenation and preparation method
  • Catalyst for propane dehydrogenation and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Weigh 47.4 grams of chromium nitrate, 9.1 grams of copper nitrate, add to 100 ml of deionized water, then add 88 grams of specific surface area 117m 2 / g, aluminum oxide carrier with a pore size of 15nm, adjust the pH value of the solution to 3.5 with 2.5% ammonia water, then soak in a water bath at 80°C for 1 hour, take out the sample and filter it, dry it in an oven at 120°C for 8 hours, and then put the sample Put it into a muffle furnace and bake at 550° C. for 4 hours to obtain the desired catalyst.

[0036] Adjust the flow of propane gas through the mass flow meter, enter the preheating zone for preheating, and then enter the reaction zone. The heating section and the reaction section of the reactor are heated by electric heating wires to make them reach the predetermined temperature. The inner diameter of the reactor is Ф6mm Quartz tube, about 400mm long. After the reaction gas passes through the condensation tank, it enters the gas chromatography to analyze its ...

Embodiment 2

[0039] Weigh 47.4 grams of chromium nitrate, 9.1 grams of copper nitrate, add to 100 ml of deionized water, then add 88 grams of specific surface area 340m 2 / g, alumina carrier with a pore size of 9nm, adjust the pH value of the solution to 3.5 with 2.5% ammonia water, and then soak it in a water bath at 80°C for 1 hour, take out the sample for filtration, dry it in an oven at 120°C for 8 hours, and then put the sample Put it into a muffle furnace and bake at 550° C. for 4 hours to obtain the desired catalyst. Evaluation conditions are the same as in Example 1, and the results are shown in Table 1.

Embodiment 3

[0041] Weigh 47.4 grams of chromium nitrate, 9.1 grams of copper nitrate, add to 100 ml of deionized water, then add 88 grams of specific surface area 173m 2 / g, aluminum oxide carrier with a pore size of 12nm, adjust the pH value of the solution to 3.5 with 2.5% ammonia water, then soak in a water bath at 80°C for 1 hour, take out the sample for filtration, dry it in an oven at 120°C for 8 hours, and then put the sample Put it into a muffle furnace and bake at 550° C. for 4 hours to obtain the desired catalyst. Evaluation conditions are the same as in Example 1, and the results are shown in Table 1.

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Abstract

The invention relates to a catalyst for propane dehydrogenation and a preparation method, which mainly solves the problem of low activity of Cr-based dehydrogenation catalysts prepared in the prior art. The dehydrogenation catalyst used in the present invention comprises the following components in parts by weight of the catalyst: a) 1 to 28 parts of Cr and / or W elements or their oxides; b) 0 to 5 parts selected from the first IB of the periodic table at least one element in the group or its oxide; c) 69-96 parts of alumina carrier, which solves this problem well and can be used for industrial application of propane dehydrogenation.

Description

technical field [0001] The invention relates to a catalyst for propane dehydrogenation and a preparation method. Background technique [0002] With the popularity of civil natural gas and the mature utilization of shale gas development technology, the utilization of low-carbon alkanes contained in it, especially propane, has attracted widespread attention. As one of the most widely used olefins in petrochemical industry, propylene is mainly used in the production of polypropylene, and also in the production of acrylonitrile, propylene oxide, acrylic acid, isopropanol, etc. Cogeneration of ethylene and cracking of light oil (naphtha, light diesel oil) are the traditional methods for producing propylene. However, propylene is limited by the source of raw materials and it is difficult to increase it on a large scale. Therefore, countries around the world are vigorously developing new routes for the production of propylene and other low-carbon olefins. , including methanol to o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/68B01J23/86B01J23/888B01J23/89C07C5/333C07C11/06
CPCB01J23/002B01J23/685B01J23/687B01J23/868B01J23/888B01J23/8993B01J2523/00C07C5/3332C07C2523/68C07C2523/86C07C2523/888C07C2523/89B01J2523/17B01J2523/31B01J2523/67B01J2523/18B01J2523/69C07C11/06Y02P20/52
Inventor 吴省缪长喜吴文海张新玉
Owner CHINA PETROLEUM & CHEM CORP
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