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Hydrogenation catalyst for the preparation of 1,4-diacetoxybutane

A technology of diacetoxybutane and hydrogenation catalyst, which is applied in metal/metal oxide/metal hydroxide catalyst, physical/chemical process catalyst, carboxylate preparation, etc., can solve the problem of 1,4-diacetyl Problems with low yield and selectivity of oxybutane and high yield of 1,4-diacetoxybutane

Active Publication Date: 2020-01-03
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] One of the technical problems to be solved by the present invention is the low yield and selectivity of 1,4-diacetoxybutane, providing a new process for preparing 1,4-diacetoxybutane Hydrogen catalyst, the catalyst has the characteristics of high yield and high selectivity of 1,4-diacetoxybutane

Method used

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  • Hydrogenation catalyst for the preparation of 1,4-diacetoxybutane
  • Hydrogenation catalyst for the preparation of 1,4-diacetoxybutane
  • Hydrogenation catalyst for the preparation of 1,4-diacetoxybutane

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Preparation of hydrogenation catalyst:

[0043] ① Ammonium chloroplatinite ((NH 4 ) 2 PtCl 4 ) is dissolved in the hydrochloric acid aqueous solution that concentration is 8wt%, obtains impregnation solution 200ml, and 1L diameter 3mm, length 2cm, pore volume are 0.80cm 3 / g, the specific surface area is 1200cm 2 The coal-based cylindrical activated carbon carrier of / g is impregnated in the above-mentioned impregnating liquid, obtains catalyst precursor I;

[0044] ② Standing and aging for 24 hours to obtain catalyst precursor II;

[0045] ③ with a concentration of 8% (in N 2 h 4 ·H 2 The 500ml hydrazine hydrate of (2 weight ratio) reduces catalyst precursor II for 3h, obtains catalyst precursor III;

[0046] ④ washed with water to no chloride ion, dried at 50°C for 4 hours to obtain catalyst precursor IV;

[0047] ⑤Stannous nitrate (Sn(NO) containing 1.85g Sn 3 ) 2 ) 180ml of aqueous solution was impregnated on the catalyst precursor IV, and dried at 110° C...

Embodiment 2

[0053] Preparation of hydrogenation catalyst:

[0054] ① Ammonium chloroplatinite ((NH 4 ) 2 PtCl 4 ) is dissolved in the hydrochloric acid aqueous solution that concentration is 8wt%, obtains impregnation solution 200ml, and 1L diameter 3mm, length 2cm, pore volume are 0.80cm 3 / g, the specific surface area is 1200cm 2 The coal-based cylindrical activated carbon carrier of / g is impregnated in the above-mentioned impregnating liquid, obtains catalyst precursor I;

[0055] ② Standing and aging for 24 hours to obtain catalyst precursor II;

[0056] ③ with a concentration of 8% (in N 2 h 4 ·H 2 The 500ml hydrazine hydrate of (2 weight ratio) reduces catalyst precursor II for 3h, obtains catalyst precursor III;

[0057] ④ washed with water to no chloride ion, dried at 50°C for 4 hours to obtain catalyst precursor IV;

[0058] ⑤ Ammonium molybdate ((NH 4 ) 6 Mo 7 o 24 4H 2 O) 180ml of aqueous solution was impregnated on the catalyst precursor IV, and dried at 110° C....

Embodiment 3

[0088] Preparation of hydrogenation catalyst:

[0089] ① Ammonium chloroplatinite ((NH 4 ) 2 PtCl 4 ) is dissolved in the hydrochloric acid aqueous solution that concentration is 8wt%, obtains impregnation solution 200ml, and 1L diameter 3mm, length 2cm, pore volume are 0.80cm 3 / g, the specific surface area is 1200cm 2 The coal-based cylindrical activated carbon carrier of / g is impregnated in the above-mentioned impregnating liquid, obtains catalyst precursor I;

[0090] ② Standing and aging for 24 hours to obtain catalyst precursor II;

[0091] ③ with a concentration of 8% (in N 2 h 4 ·H 2 The 500ml hydrazine hydrate of (2 weight ratio) reduces catalyst precursor II for 3h, obtains catalyst precursor III;

[0092] ④ washed with water to no chloride ion, dried at 50°C for 4 hours to obtain catalyst precursor IV;

[0093] ⑤ Chromium acetate (Cr(OAc) containing 1.85g Cr 3 ·6H 2 O) Dissolved in hot water to obtain 180 ml of impregnating solution, impregnated on the c...

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Abstract

The invention relates to a hydrogenation catalyst for preparing 1,4-diacetoxy butane, and mainly solves the problems of low yield and low selectivity of the 1,4-diacetoxy butane in the prior art. Thehydrogenation catalyst for preparing the 1,4-diacetoxy butane has the technical scheme that the hydrogenation catalyst is prepared from a carrier and active ingredients, wherein the carrier is activecarbon; the active ingredients comprise a Pt element and cocatalyst elements; the cocatalyst elements include at least one metal element selected from IVA group metal and at least one metal element selected from VIB group metal. The technical problems are better solved; the hydrogenation catalyst can be used in industrial production of the 1,4-diacetoxy butane.

Description

technical field [0001] The present invention relates to hydrogenation catalysts for the preparation of 1,4-diacetoxybutane. Background technique [0002] 1,4-Butanediol (1,4-BDO) is an important organic and fine chemical raw material, which is widely used in the fields of medicine, chemical industry, textile, papermaking, automobile and daily chemical industry. It can derive a series of high value-added fine chemical products. For example, tetrahydrofuran (THF), polybutylene terephthalate (PBT), γ-butyrolactone (GBL) and polyurethane resin (PU Resin) can be produced from 1,4-BDO, especially as the production of PBT engineering The basic raw material of plastic and PBT fiber has received extensive attention from research institutions. [0003] There are many process routes for the preparation of 1,4-butanediol. From the raw materials used, there are acetylene, ethylene, propylene, butadiene and maleic anhydride and other raw material routes. The same raw materials also have...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/62B01J23/652C07C67/283C07C69/16
CPCB01J23/626B01J23/628B01J23/6522B01J23/6525B01J23/6527C07C67/283C07C69/16
Inventor 查晓钟杨运信
Owner CHINA PETROLEUM & CHEM CORP
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