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A kind of preparation method of polymer grade solvent isopentane

An isopentane, polymerization-grade technology used in the preparation of high-efficiency polymerized olefin solvents, which can solve problems such as unsatisfactory activity, stability and lifespan

Active Publication Date: 2022-02-22
濮阳市联众兴业化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Both catalysts have unsatisfactory shortcomings such as activity, stability and lifetime.

Method used

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  • A kind of preparation method of polymer grade solvent isopentane
  • A kind of preparation method of polymer grade solvent isopentane

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] 1. Preparation of catalyst

[0025] 1. Preparation of nickel-based catalyst

[0026] Step 1: After wet ball milling 1 g of vanadium trioxide and 1 g of cobalt oxide for 3 hours, add 98 g of nickel oxide and continue wet ball milling for 10 hours to obtain a homogeneous mixture A of vanadium trioxide, cobalt oxide and nickel oxide.

[0027] Step 2: Dry the mixture A obtained in step 1 at 120°C for 2 hours, then sinter at 800°C for 5 hours, and finally grind it into nano-sized nickel-cobalt-vanadium-oxygen solid solution powder B.

[0028] Step 3: Take 1 g of nano-scale solid solution powder B obtained in step 2 and 99 g of powdered molecular sieve dry-milling for 5 hours and mix evenly, and finally granulate and reduce to obtain a nickel-based catalyst with nickel-cobalt-vanadium solid solution as the active component.

[0029] 2. Preparation of palladium-based catalyst

[0030] Step a: Add 200 g of 4-vinylphenylboronic acid into 250 ml of dried THF, disperse evenly, a...

Embodiment 2

[0040] 1. Preparation of catalyst

[0041] 1. Preparation of nickel-based catalyst

[0042] Step 1: After wet ball milling 2.5 g of vanadium trioxide and 2.5 g of cobalt oxide for 3 hours, add 95 g of nickel oxide and continue wet ball milling for 10 hours to obtain a homogeneous mixture A of vanadium trioxide, cobalt oxide and nickel oxide.

[0043] Step 2: Dry the mixture A obtained in step 1 at 120°C for 2 hours, then sinter at 1000°C for 5 hours, and finally grind it into nano-sized nickel-cobalt-vanadium-oxygen solid solution powder B.

[0044] Step 3: Take 2.5g of the nano-scale solid solution powder B obtained in step 2 and 97.5g of powdered molecular sieve dry mill for 5 hours and mix evenly, and finally granulate and reduce to obtain the nickel-based solid solution with nickel-cobalt-vanadium solid solution as the active component. catalyst.

[0045] 2. Preparation of palladium-based catalyst

[0046] Step a: Add 200 g of 4-vinylphenylboronic acid into 250 ml of dr...

Embodiment 3

[0056] 1. Preparation of catalyst

[0057] 1. Preparation of nickel-based catalyst

[0058] Step 1: After wet ball milling 5g of vanadium trioxide and 5g of cobalt oxide for 3 hours, add 90g of nickel oxide and continue wet ball milling for 10 hours to obtain a homogeneous mixture A of vanadium trioxide, cobalt oxide and nickel oxide.

[0059] Step 2: Dry the mixture A obtained in step 1 at 120°C for 2 hours, then sinter at 1200°C for 5 hours, and finally grind it into nano-sized nickel-cobalt-vanadium-oxygen solid solution powder B.

[0060] Step 3: Take 5g of the nano-scale solid solution powder B obtained in step 2 and 95g of powdered molecular sieve dry-milling for 5 hours and mix evenly, and finally granulate and reduce to obtain a nickel-based catalyst with nickel-cobalt-vanadium solid solution as the active component.

[0061] 2. Preparation of palladium-based catalyst

[0062] Step a: Add 200 g of 4-vinylphenylboronic acid into 250 ml of dried THF, disperse evenly, a...

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Abstract

The invention discloses a method for preparing polymer grade solvent isopentane by cracking C5 as a raw material. The preparation method includes the steps of desulfurization, two-stage hydrogenation, separation and dehydration. ‑Cobalt‑vanadium solid solution is a nickel-based catalyst as the active component, and the second-stage hydrogenation uses a palladium-based catalyst supported on a boron-doped carbon material carrier. In the hydrogenation reaction process of the present invention, a special nickel-based catalyst and a palladium-based catalyst are adopted. The two catalysts have the advantages of good activity, stability and long life, and can carry out the hydrogenation reaction at a lower temperature and pressure, reducing the Process energy consumption and equipment stress.

Description

technical field [0001] The invention relates to the field of preparation methods of high-efficiency polymerization olefin solvents, in particular to a preparation method of isopentane, a polymerization-grade solvent in the petrochemical industry. Background technique [0002] In the polymer production process, one or more of isopentane, n-pentane, cyclopentane, methylcyclopentane, etc. are used as light pre-polymerization solvents or catalyst preparation solvents for polyolefin catalysts, and the solvents have chemical properties Stable, safe to operate, and non-toxic, it is used to replace the traditional high boiling point, non-volatile, and high-viscosity solvents in the catalyst prepolymerization process in the polyolefin industry, and isopentane is the most widely used one. [0003] In the current process for preparing isopentane, cracked carbon five is generally used as a raw material, and two-stage hydrogenation is followed by rectification to prepare isopentane. The ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C9/18C07C5/03B01J27/20B01J23/44B01J29/00
CPCC07C5/03B01J27/20B01J23/44B01J29/00C07C2527/20C07C2523/44C07C2529/00
Inventor 张启杨晶宇杨浩杨世坤张怀敏丁俊杰曹晨阳
Owner 濮阳市联众兴业化工有限公司
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