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Isobutane dehydrogenation catalyst and preparation method thereof

A catalyst, isobutane technology, applied in the field of isobutane dehydrogenation catalyst and its preparation, to achieve good technical effect

Active Publication Date: 2019-04-19
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Isobutane dehydrogenation catalysts have made great progress, but there is still room for improvement in catalyst activity
The present invention adopts M1-M2-Al-O as the carrier to load Pt-Sn catalyst to improve the performance of the catalyst, and has good application prospect, but there is no relevant report yet

Method used

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  • Isobutane dehydrogenation catalyst and preparation method thereof
  • Isobutane dehydrogenation catalyst and preparation method thereof
  • Isobutane dehydrogenation catalyst and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Weigh 47.96g of beryllium chloride, 64.88g of ferric chloride, 24.52g of lanthanum chloride and 253.34g of aluminum chloride soluble salt, dissolve them in 1L of deionized water, mix well, and slowly drip ammonia into it under continuous stirring. Adjust the pH to 8.2, age the product for 2 hours, filter and wash with 4L water to obtain a filter cake. After drying the filter cake at 100°C for 16 hours, it is calcined in a muffle furnace at 600°C for 20 hours to obtain Be 0.6 Fe 0.4 La 0.1 Al 1.9 O x Carrier. Weigh 9.85g carrier into a beaker, then weigh 0.295g tin tetrachloride dissolved in 10mL hydrochloric acid solution, add the above carrier under stirring, mix well, soak at 30℃ for 12 hours, then dry at 100℃ for 16 hours. Obtain the catalyst precursor, denoted as I. Weigh 0.133 chloroplatinic acid and dissolve it in 10 mL of water, add it to I with stirring, mix well, soak at 30°C for 12 hours, dry at 100°C for 16 hours, and roast in a muffle furnace at 600°C for 20 ...

Embodiment 2

[0033] Weigh 153.84g magnesium nitrate, 161.60g iron nitrate, 32.49g lanthanum nitrate and 712.75g aluminum nitrate soluble salt dissolved in 1L of deionized water, mix well, slowly drip ammonia into it under continuous stirring, and adjust the pH value 8.2. Aging the product for 2 hours and washing with 4L of water to obtain a filter cake. After drying the filter cake at 100°C for 16 hours, it is calcined in a muffle furnace at 600°C for 20 hours to obtain Mg 0.6 Fe 0.4 La 0.1 Al 1.9 O x Carrier. Weigh 9.85g of carrier into a beaker, then weigh 0.190g of stannous chloride dissolved in 10mL of hydrochloric acid solution, add the above carrier under stirring, mix well, soak at 30℃ for 12 hours, and then dry at 100℃ for 16 hours. Obtain the catalyst precursor, denoted as I. Weigh 0.133 chloroplatinic acid and dissolve it in 10 mL of water, add it to I with stirring, mix well, soak at 30°C for 12 hours, dry at 100°C for 16 hours, and roast in a muffle furnace at 600°C for 20 hours...

Embodiment 3

[0035] Weigh 132.13g of calcium acetate, 69.57g of iron acetate, 31.60g of lanthanum acetate and 307.96g of basic aluminum acetate soluble salt, dissolve in 1L of deionized water, mix well, and slowly drip ammonia into it under continuous stirring to adjust the pH The value is 8.2. The product is aged for 2 hours, filtered and washed with 4L water to obtain a filter cake. After drying the filter cake at 100°C for 16 hours, it is calcined in a muffle furnace at 600°C for 20 hours to obtain Ca 0.56 Fe 0.4 La 0.1 Al 1.9 O x Carrier. Weigh 9.85g of carrier into a beaker, then weigh 0.190g of stannous chloride dissolved in 10mL of hydrochloric acid solution, add the above carrier under stirring, mix well, soak at 30℃ for 12 hours, and then dry at 100℃ for 16 hours. Obtain the catalyst precursor, denoted as I. Weigh 0.133 chloroplatinic acid and dissolve it in 10 mL of water, add it to I with stirring, mix well, soak at 30°C for 12 hours, dry at 100°C for 16 hours, and roast in a muf...

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Abstract

The invention relates to an isobutane dehydrogenation catalyst and a preparation method thereof, and mainly solves the problem that the activity of a dehydrogenation catalyst prepared in the prior artis low. The composition catalyst is prepared from the following components in parts by weight: a) Pt or an oxide thereof; b) 0.1-5 parts of Sn or an oxide thereof; and c) 90-99 parts of a compound oxide M1-M2-Al-O carrier, M1 is selected from a mixture of IIA and VIIIB elements, M2 is selected from at least one of lanthanide elements, and the catalyst can well solve the problem that the activityof the dehydrogenation catalyst prepared in the prior art is low, and can be used for industrial production of isobutene through dehydrogenation of isobutane.

Description

Technical field [0001] The invention relates to a catalyst for isobutane dehydrogenation and a preparation method thereof. Background technique [0002] Isobutylene is generally used as a by-product in refineries and chemical plants. Despite the development and promotion of MGG and catalytic cracking processes that produce more isobutylene, the amount of by-products of propylene and isobutylene from refineries and chemical plants still cannot meet market demand, especially MTBE produced by isobutylene etherification as low pollution and high The octane gasoline additive has become the fastest growing bulk chemical product in the world, and the demand for isobutylene is increasing day by day. Therefore, the process of using isobutane dehydrogenation to produce isobutene is popular in areas with rich propane and isobutane resources. The world’s industrialized dehydrogenation processes include Philips Petroleum’s STAR process, United Catalysis and Lums’ Catofin process, UOP’s Olef...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/89C07C5/333C07C11/09
CPCB01J23/002B01J23/8946B01J2523/00C07C5/3332C07C2523/89B01J2523/21B01J2523/31B01J2523/3706B01J2523/43B01J2523/828B01J2523/842B01J2523/22B01J2523/23B01J2523/24B01J2523/25B01J2523/845C07C11/09
Inventor 姜冬宇缪长喜吴文海樊志贵曾铁强
Owner CHINA PETROLEUM & CHEM CORP