Application of alkyne selective hydrogenation catalyst

A selective hydrogenation and catalyst technology, applied in physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, hydrocarbons, etc., can solve the problem of easy loss of catalyst active components, difficult regeneration, and poor selectivity And other issues

Active Publication Date: 2012-05-23
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Noble metal catalysts have good low-temperature activity and mild reaction conditions, but their disadvantages are that the active components of the catalyst are easy to lose, expensive, difficult to regenerate, and slightly poor in hydrogenation selectivity
Due to the poor selectivity of the above catalys...

Method used

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  • Application of alkyne selective hydrogenation catalyst
  • Application of alkyne selective hydrogenation catalyst
  • Application of alkyne selective hydrogenation catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] Embodiment 1-preparation catalyst 1

[0055] Firstly, a titania-alumina composite oxide carrier was prepared according to the method in Example 1 of CN1184289C. Take the specific surface area as 160m 2 / g, 90g of clover-shaped alumina with a pore volume of 0.58ml / g and a most probable pore diameter of 130 angstroms, impregnated with 53ml of titanium sulfate in a 0.557g / ml dilute sulfuric acid solution, stirred for 15 minutes, and dried at 120°C for 8 hours Then, it was calcined at 900° C. for 4 hours to obtain a titanium oxide-alumina composite oxide (A-1). The obtained composite oxide had a titanium oxide content of 10% by weight and a specific surface area of ​​144m 2 / g, the pore volume is 0.56ml / g, and the most probable pore diameter is 125 angstroms.

[0056] Prepare 63ml of a mixed aqueous solution containing copper nitrate, cobalt nitrate, cerium nitrate and nickel nitrate as the immersion solution, in the immersion solution, the amount of copper nitrate is 3%...

Embodiment 2

[0057] Embodiment 2-preparation catalyst 2

[0058]Prepare 63 ml of a mixed aqueous solution containing copper nitrate, cobalt nitrate, lanthanum nitrate and zinc nitrate as an immersion solution, in this immersion solution, the amount of copper nitrate is 7% by weight based on copper element, and the amount of cobalt nitrate is 3% by weight based on cobalt element , the amount of lanthanum nitrate is 0.1% by weight in terms of lanthanum element, and the amount of zinc nitrate is 0.2% by weight in terms of zinc element. At room temperature, take 100g of titanium oxide-alumina composite oxide (A-1), impregnate it with the previously prepared impregnation solution, dry it at 120°C for 4 hours, then calcinate it at 500°C for 4 hours, take it out and cool it to room temperature . The catalyst prepared in this way is designated Catalyst 2.

Embodiment 3

[0059] Embodiment 3-preparation catalyst 3

[0060] Prepare 63ml of a mixed aqueous solution containing copper nitrate, cobalt nitrate, neodymium nitrate and nickel nitrate as the immersion solution, in the immersion solution, the amount of copper nitrate is 5% by weight based on copper element, and the amount of cobalt nitrate is 3% by weight based on cobalt element , the amount of neodymium nitrate was 0.1% by weight as neodymium element, and the amount of nickel nitrate was 0.2% by weight as nickel element. At room temperature, take 100g of titanium oxide-alumina composite oxide (A-1), impregnate it with the previously prepared impregnation solution, dry it at 120°C for 4 hours, then calcinate it at 500°C for 4 hours, take it out and cool it to room temperature . The catalyst prepared in this way is designated Catalyst 3.

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Abstract

The invention provides application of an alkyne selective hydrogenation catalyst to the removal of alkyne from hydrogenation C4 distillates. The catalyst comprises a titanium oxide-aluminum oxide composite oxide carrier and the following components loaded on the carrier: a) 1 to 20 weight percent of copper, b) 0.05 to 3 weight percent of cobalt, c) 0.05 to 1 weight percent of one or more lanthanide metals, and d) optional zinc and/or nickel. When being used for alkyne selective hydrogenation, the catalyst has high activity and selectivity, and can resist sulfur poisoning and arsenic poisoning; and the using time of the catalyst is obviously prolonged. Therefore, the catalyst is particularly suitable for a selective hydrogenation process of an alkyne in a mixed C4 hydrocarbon.

Description

technical field [0001] The invention relates to the application of an alkyne selective hydrogenation catalyst in hydrogenation and removal of alkynes in carbon four fractions. Specifically, the catalyst used in the application is a supported copper-based alkyne selective hydrogenation catalyst comprising a titania-alumina composite oxide support, and the active metal components loaded on the support are in addition to In addition to copper, cobalt, lanthanide metals, and optionally zinc and / or nickel are included as promoter metals. When the catalyst is used for hydroremoval of C 4 When the alkyne in the distillate is used, it not only has high catalytic activity and high selectivity, but also has good stability and long service life. Background technique [0002] 1,3-butadiene as a raw material for synthetic rubber is mainly a by-product C from cracking to ethylene 4 Separated from the distillate. Synthetic rubber requires that the total content of alkynes in 1,3-butadi...

Claims

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Application Information

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IPC IPC(8): C07C7/167C07C11/167B01J23/83
Inventor 杜周柴忠义纪玉国季静任玉梅
Owner CHINA PETROLEUM & CHEM CORP
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