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Catalyst with hydrogenation and dimerization functions as well as preparation method and application of catalyst

A technology of catalysts and hydrogenation reactors, applied in the direction of organic compound/hydride/coordination complex catalysts, chemical instruments and methods, physical/chemical process catalysts, etc., can solve problems such as incompatibility

Active Publication Date: 2021-03-05
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It solves the technical problem that the removal of butadiene in the raw material and the dimerization of isobutene cannot be performed in parallel in the existing C4 alkylation technology, and provides a simultaneous hydrogenation removal of butadiene that can be used in the direct alkylation process Part of the dimerization of isobutene reduces the content of isobutene, and it can also be used in the method of removing butadiene in the raw material during the dimerization of indirect alkylated isobutene

Method used

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  • Catalyst with hydrogenation and dimerization functions as well as preparation method and application of catalyst
  • Catalyst with hydrogenation and dimerization functions as well as preparation method and application of catalyst
  • Catalyst with hydrogenation and dimerization functions as well as preparation method and application of catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0064] 1. Preparation of Inorganic Support

[0065] Mix high-purity aluminum hydroxide dry glue with pseudo-boehmite powder at 1:1, add 5% scallop powder and mix evenly, add 2% citric acid aqueous solution, 10% white carbon black, knead and extrude to make a diameter of 1.5 mm strips were calcined according to the following temperature program to obtain the carrier.

[0066] a drying at room temperature for 24 hours;

[0067] b Dry at 150°C for 4 hours;

[0068] c 3 hours from 150 to 600 ℃;

[0069] d constant temperature for 2 hours;

[0070] e 4 hours from 600 to 1000 ℃;

[0071] f constant temperature for 4 hours;

[0072] g natural cooling;

[0073] The prepared carrier has the following properties:

[0074] Crystal phase: δ phase as the main phase; specific pore volume: 0.3-0.5ml / g; specific surface: 100-150m 2 / g, the pore radius is 5.0-20nm.

[0075] 2. Catalyst preparation

[0076] Weigh palladium chloride powder with a content of 59.5% according to the Pd cont...

Embodiment 10

[0080] 1. Preparation of Organic Vehicles

[0081] Use C6-C14 paraffin solvents and aromatic hydrocarbons as porogens, and the amount added is 30% of the weight of the carrier. Styrene and divinylbenzene are made into macroporous pellets by suspension polymerization. In the presence of halogenated alkanes, 102% foam Sulfonated with nicotinic acid, washed with pure water until neutral, and dried to form an organic carrier. Styrene accounted for 0.8 parts by weight, divinylbenzene accounted for 0.2 parts by weight, C6-C14 paraffins accounted for 0.2 parts by weight, aromatics accounted for 0.1 parts by weight, dichloroethane 0.5 parts, fuming sulfuric acid 5 parts, screening diameter 0.35-1.3mm small spheres and vacuum-dried to obtain an organic vehicle. The cross-linking degree of the organic carrier resin is 18%, the particle size is 0.4-1.3%, and the specific surface area is 45m 2 / g, the pore radius is 16-24μm, the specific pore volume is 0.33ml / g, and the exchange capacit...

Embodiment 15

[0087] 1. Preparation of Inorganic Support

[0088] High-purity alumina, add 4% sage powder and mix evenly, add aqueous solution containing 2.5% citric acid and 20% white carbon black, knead and extrude into strips with a diameter of 1.5mm, and roast according to the following temperature procedures to obtain carrier.

[0089] a drying at room temperature for 22 hours;

[0090] b Dry at 120°C for 5 hours;

[0091] c 3 hours from 150 to 550 ° C;

[0092] d constant temperature for 2 hours;

[0093] e rise from 550 to 980°C in 4 hours;

[0094] f constant temperature for 4 hours;

[0095] g natural cooling;

[0096] The prepared carrier has the following properties:

[0097] Crystal phase: δ phase as the main phase; specific pore volume: 0.2-0.5ml / g; specific surface area: 50-120m 2 / g, the pore radius is 5.0-20nm.

[0098] 2. Catalyst preparation

[0099] Weigh palladium chloride powder with a content of 59.5% according to the Pd content requirements of the catalyst, ...

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Abstract

The invention relates to a catalyst with hydrogenation and dimerization functions as well as a preparation method and application thereof. The catalyst comprises a carrier, a main active component andan auxiliary active component, the carrier is an organic carrier or an inorganic carrier, the main active component is an oxide or metal salt of a metal element Pd or Pt, the auxiliary active component is an oxide or halide of one or more of VA to VIIA group elements, and the inorganic carrier is an alumina-silicon oxide carrier or a silicon oxide carrier, the organic carrier is resin taking polystyrene as a main component. The alumina is a mixed phase of a delta phase, a theta phase and an alpha phase, and the delta phase is used as the main phase; the carrier is an inorganic carrier, and the auxiliary active component is P or Cl; the carrier is an organic carrier, and the auxiliary active component is S or P. The catalyst is provided for preparation of a direct alkylation raw material and an indirect alkylation raw material; butadiene, alkyne and part of isobutene in the direct alkylation raw material are removed; and butadiene, alkyne and all isobutene in the direct alkylation rawmaterial and the indirect alkylation raw material are removed.

Description

technical field [0001] The invention belongs to the technical field of catalyst preparation, and in particular relates to a catalyst with hydrogenation and dimerization functions, its preparation method and application. Background technique [0002] The information disclosed in this background section is only intended to increase the understanding of the general background of the present invention, and is not necessarily taken as an acknowledgment or any form of suggestion that the information constitutes the prior art already known to those skilled in the art. [0003] The C4 fraction mainly comes from catalytic cracking, catalytic cracking, coal chemical (MTO, MTP) and ethylene cracking devices in petrochemical industry, and its components are a variety of alkanes, alkenes, dienes and alkynes containing 4 carbon atoms. Mixtures with industrial value mainly include butane (normal and isobutane), n-butene (butene-1, cis-2-butene, trans-2-butene), isobutene and butadiene, etc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/185B01J31/28B01J35/08B01J35/02B01J35/10C07C9/16C07C2/08B01J35/00
CPCB01J27/1856B01J31/28C07C2/08B01J35/51B01J35/40B01J35/613C07C9/16
Inventor 彭光辉董凌云
Owner CHINA PETROLEUM & CHEM CORP
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