Selective hydrogenation catalyst for alkadiene

A hydrogenation catalyst and catalyst technology, applied in physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, hydrocarbon oil treatment, etc., can solve the problem of low activity and achieve high diolefin hydrogenation activity Effect

Active Publication Date: 2005-06-29
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] The purpose of the present invention is to overcome the shortcoming of low activity of existing hydrorefining catalysts when they are used for the selective hydrogenation of diolefins, and provide a new catalyst for the selective hydrogenation of diolefins with higher activity

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0021] The preparation method of the catalyst provided by the present invention includes under conditions sufficient to deposit cobalt and / or nickel selected from group VIII, molybdenum and / or tungsten and alkali metal components selected from group VIB on the alumina carrier , bringing the alumina support into contact with a solution containing cobalt and / or nickel from group VIII, molybdenum and / or tungsten from group VIB and an alkali metal compound, for example by impregnation, co-precipitation, etc., preferably impregnation. Wherein, cobalt and / or nickel selected from group VIII, molybdenum and / or tungsten and alkali metals selected from group VIB can be introduced into the alumina carrier simultaneously or separately.

[0022] The molybdenum-containing compound is selected from one or more of molybdenum-containing soluble compounds, such as one or more of molybdenum oxide, molybdate, paramolybdate, preferably molybdenum oxide and ammonium molybdate , Ammonium paramolybda...

example 1

[0032] This example illustrates the catalyst provided by the invention and its preparation method.

[0033]Weighed 800 grams of dry rubber powder produced by the Catalyst Factory of Changling Oil Refinery, extruded into a trilobal strip with a circumscribed circle diameter of 1.4 mm, dried at 120°C, and roasted at 630°C for 3 hours in an air atmosphere to obtain 584 grams of carrier Z.

[0034] Take by weighing 4 grams of nickel nitrate, 6 grams of ammonium molybdate, and 3.3 grams of potassium hydroxide (82% KOH content, product of Beijing Chemical Reagent Factory, the same below), and adopt 16% by weight of NH 3 The aqueous solution was dissolved to prepare 90 ml of impregnation solution. Use this solution to impregnate 100 grams of carrier Z for 4 hours, dry at 120°C for 4 hours, and bake at 420°C for 4 hours. ℃ for 4 hours to obtain catalyst C1. The contents of nickel, molybdenum and potassium oxides in catalyst C1 are listed in Table 1.

[0035] The contents of nickel,...

example 2

[0043] This example illustrates the catalyst provided by the invention and its preparation method.

[0044] Weigh 4 grams of nickel nitrate, 6 grams of ammonium molybdate, and 9 grams of potassium hydroxide, using 16% by weight of NH 3 The aqueous solution was dissolved to prepare 90 ml of impregnation solution. Use this solution to impregnate 100 grams of carrier Z for 4 hours, dry at 120°C for 4 hours, and bake at 420°C for 4 hours. ℃ for 4 hours to obtain catalyst C2. The contents of nickel, molybdenum and potassium oxides in catalyst C2 are listed in Table 1.

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Abstract

This is about a kind of catalyst of adding hydrogen of choosing. The catalyst includes a kind of Oxidize the aluminum placer and Gu and/or Ni in ó°, Mu and/or Wu in ó÷ and alkali metal. Its feature is: the catalyst includes 0.5--8% by weight that is chosen Gu and/or Ni in ó°, 2--15% is chosen Mu and/or Wu in ó÷, >2--8% alkali metal. Compared to the current catalyst, the catalyst offend in the invention has much higher choosing ability and activity in adding hydrogen of gasoline.

Description

technical field [0001] The present invention relates to a hydrorefining catalyst, more particularly to a diolefin selective hydrogenation catalyst. Background technique [0002] FCC gasoline contains more diolefins. At a certain reaction temperature, in addition to their own polymerization, the diolefins will also react with other hydrocarbons in FCC gasoline to form gums and other coking precursors. It is usually selectively removed by hydrogenation. [0003] US6,084,140 discloses a method for preparing a catalyst for the selective hydrogenation of highly unsaturated hydrocarbons in olefin fractions. The catalyst consists of alumina and metallic palladium supported on the alumina. The content of metallic palladium is 0.02-3.0% by weight. The catalyst can effectively remove highly unsaturated hydrocarbons in olefin fractions. [0004] US6,255,548 discloses a method for preparing a catalyst for the selective hydrogenation of unsaturated hydrocar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/88B01J23/882B01J23/883C07C5/05C10G70/02
Inventor 李明丰褚阳胡云剑查宇慧夏国富聂红石亚华李大东张润强朱玫李坚
Owner CHINA PETROLEUM & CHEM CORP
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