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Butadiene selective hydrogenation catalyst

A technology for selective hydrogenation and butadiene, applied in physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, hydrogenation to hydrocarbons, etc., can solve problems such as poor selectivity, limited application and development

Active Publication Date: 2019-09-06
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Nickel-based catalysts have good hydrogenation activity but relatively poor selectivity, thus limiting their application and development

Method used

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  • Butadiene selective hydrogenation catalyst
  • Butadiene selective hydrogenation catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] 1. Catalyst preparation

[0036] Take by weighing 14 grams of pseudo-boehmite equivalent to 10 grams of alumina, 130 grams of alumina, and 9 grams of asparagus powder, mix, then add 20 grams of polyvinyl alcohol-containing solution (mass concentration is 5%), and the mass concentration is 3.0 grams of 68% nitric acid, 200 milliliters of water, squeezed into mm clover-shaped carrier, the wet strip was dried at 110°C for 4 hours and then calcined at 750°C for 4 hours to obtain carrier Z1. Mix 20 grams of the above-mentioned carrier with nickel nitrate-silver nitrate mixed aqueous solution 26 containing 14 grams of nickel and 2.0 grams of silver, dry at 110° C. for 8 hours, and calcinate at 550° C. for 4 hours to obtain a Ni-based catalyst. Restore with hydrogen for 4 hours before use, the reduction temperature is 450°C, and the volumetric space velocity of hydrogen is 50 hours -1 , to obtain a low isomerism, selective hydrogenation catalyst, the specific composition is...

Embodiment 2

[0046] 1. Catalyst preparation

[0047] Take by weighing 14 grams of pseudo-boehmite equivalent to 10 grams of alumina, 130 grams of alumina, and 9 grams of asparagus powder, mix, then add 20 grams of polyvinyl alcohol-containing solution (mass concentration is 5%), and the mass concentration is 3.0 grams of 68% nitric acid, 200 milliliters of water, squeezed into mm clover-shaped carrier, the wet strip was dried at 110°C for 4 hours and then calcined at 750°C for 4 hours to obtain carrier Z1. Mix 20 grams of the above carrier with 26 grams of nickel nitrate-silver nitrate mixed aqueous solution containing 14 grams of nickel and 2.0 grams of silver, dry at 110°C for 8 hours, and calcined at 550°C for 4 hours to prepare a Ni-based catalyst. Restore with hydrogen for 4 hours before use, the reduction temperature is 450°C, and the volumetric space velocity of hydrogen is 50 hours -1 , to obtain a low isomerism, selective hydrogenation catalyst, the specific composition is show...

Embodiment 3

[0057] 1. Catalyst preparation

[0058] Take by weighing 14 grams of pseudo-boehmite equivalent to 10 grams of alumina, 130 grams of alumina, and 9 grams of asparagus powder, mix, then add 20 grams of polyvinyl alcohol-containing solution (mass concentration is 5%), and the mass concentration is 3.0 grams of 68% nitric acid, 200 milliliters of water, squeezed into mm clover-shaped carrier, the wet strip was dried at 110°C for 4 hours and then calcined at 750°C for 4 hours to obtain carrier Z1. Mix 20 grams of the above-mentioned carrier with 26 grams of nickel nitrate-silver nitrate-auric acid mixed aqueous solution containing 14 grams of nickel, 1.0 grams of silver and 1.0 grams of gold, dry at 110°C for 8 hours, and bake at 550°C for 4 hours to prepare Obtain Ni-based catalyst. Restore with hydrogen for 4 hours before use, the reduction temperature is 450°C, and the volumetric space velocity of hydrogen is 50 hours -1 , to obtain a low isomerism, selective hydrogenation ...

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Abstract

The invention relates to a catalyst for selective hydrogenation of butadiene, and mainly solves the technical problems of high catalyst cost and high n-butene loss in the prior art. The catalyst for selective hydrogenation of butadiene comprises the following components in parts by weight: (a) 5-20 parts of metal nickel or oxide thereof; (b) 0.5-4 parts of metals in IB group or oxides thereof; (c) 0-2 parts of alkali metals or oxides thereof; (d) 75-88 parts of a carrier aluminum oxide. The technical scheme better solves the technical problem, and can be applied to selective hydrogenation of materials containing butadiene.

Description

technical field [0001] The invention relates to a catalyst for selective hydrogenation of butadiene and a method for selective hydrogenation of butadiene-containing materials, in particular to selective hydrogenation of C4 materials containing a small amount of butadiene, while removing butadiene and reducing butene -1 loss of selective hydrogenation catalyst and hydrogenation method. [0002] Background of the invention [0003] N-butene is the main component of the by-product of catalytic cracking, ethylene steam cracking and MTO units in refineries—C4 fraction. The price is relatively low, and it is mainly consumed in the fields of fuel and chemical industry. Used in the production of sec-butanol, methyl ethyl ketone, polyethylene third monomer, etc. In recent years, the application of new technologies for n-butene, such as olefin cracking and olefin disproportionation process packages, has been successfully developed, and the demand for n-butene is increasing day by day....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/89C07C5/05C07C11/08
Inventor 赵多刘仲能马宇春王燕波
Owner CHINA PETROLEUM & CHEM CORP
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