Carbon four-component selective hydrogenation catalyst and preparation method

A hydrogenation catalyst and selective technology, applied in the fields of hydrocarbons, chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, etc. -The yield of butene cannot be taken into account, etc., to achieve the effect of long life and convenient use

Active Publication Date: 2022-03-11
大连华邦化学有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Palladium system catalysts have the characteristics of low operating temperature, but basically there is a problem that the depth of butadiene removal and the yield of 1-butene cannot be balanced. The olefin yield is less than 99%

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] a. Weigh 1000g CeCl 3 and 1000gZrCl 4 , prepare a 2L aqueous solution and an ammonia solution with a mass concentration of 0.35%, and co-precipitate to generate CeO 2 -ZrO 2 mixture, washed CeO 2 -ZrO 2 until the mixture is free of Cl - 1150g CeO was made by drying at 120°C for 5h 2 -ZrO 2 mixture;

[0014] b. Take 400gCeO 2 -ZrO 2 , 500gγAl 2 o 3 and 100g of attapulgite, mix them evenly with a mixer, and then extrude them into 1 / 8" bars with an extruder or make 1.7-2.5mm spherical particles with a sugar coating machine, and dry them after 24 hours of water mist curing. 2 The protection program heats up to 450°C and bakes to make a catalyst support carrier;

[0015] c. With 2.52gPdCl 2 , 1.02gRuCl 3 , 0.8gAgNO 3 , 2ml of concentrated hydrochloric acid with a mass concentration of 37%, and 200ml of deionized water are heated and dissolved to make a mixed solution;

[0016] d. Take 500g of the above-prepared catalyst support carrier, soak it in an equal vo...

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Abstract

The invention discloses a carbon four-component selective hydrogenation catalyst and a preparation method taking into account the depth of butadiene removal and the yield of 1-butene. The carbon four-component selective hydrogenation catalyst consists of active components, selectivity The active component is Pd, the selective additives are Ru and Ag, and the support carrier is γAl 2 o 3 , CeO 2 -ZrO 2 and attapulgite; the Pd is 0.05% to 1.5% of the mass of the support carrier, the selective additives Ru and Ag are respectively 0.05 to 2% of the mass of the support carrier, and the γAl in the support carrier 2 o 3 , CeO 2 -ZrO 2 , The quality of attapulgite is 50~60%, 30~40%, 10~20% respectively.

Description

technical field [0001] The invention relates to a carbon four-component selective hydrogenation catalyst and a preparation method thereof, in particular to a carbon four-component selective hydrogenation catalyst and a preparation method taking into account the depth of butadiene removal and the yield of 1-butene. Background technique [0002] Carbon four components are the general term for alkanes, monoolefins and diolefins, mainly derived from petroleum olefin cracking and coal chemical MTO plant products. The petroleum olefin cracking unit mainly produces ethylene, and co-produces propylene and C4 components at the same time. The C4 mainly produces MTBE and monobutene; the coal chemical MTO plant produces olefins, ethylene and propylene, and produces some C4 products at the same time. C4 is used to produce products such as MTBE, 1-butene and 2PH. Since the carbon four components contain diolefins, under certain conditions, it is easy to polymerize and block the catalyst ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/66C07C7/163C07C11/08
CPCB01J23/66C07C7/163C07C11/08
Inventor 侯鹏周永涛刘超孙宗礼马军鹏吴春雷褚世洋
Owner 大连华邦化学有限公司
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