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Hydrogenation catalyst for synthesizing 1,4-diacetoxybutane

A technology of diacetoxybutane and hydrogenation catalyst, applied in the field of hydrogenation catalyst, can solve the problems of low yield and selectivity of 1,4-butanediol

Active Publication Date: 2018-05-11
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is the low yield and selectivity of 1,4-butanediol, providing a new hydrogenation catalyst for the synthesis of 1,4-diacetoxybutane, which has 1,4-diacetoxybutane features high yield and high selectivity

Method used

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  • Hydrogenation catalyst for synthesizing 1,4-diacetoxybutane
  • Hydrogenation catalyst for synthesizing 1,4-diacetoxybutane
  • Hydrogenation catalyst for synthesizing 1,4-diacetoxybutane

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Preparation of hydrogenation catalyst:

[0044] ① Ammonium chloroplatinite containing 2.05gPt ((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;

[0045] ② Standing and aging for 24 hours to obtain catalyst precursor II;

[0046] 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;

[0047] ④ washed with water to no chloride ion, dried at 50°C for 4 hours to obtain catalyst precursor IV;

[0048] ⑤The lanthanum acetate (La(OAc) containing 1.90g La 3 ·5H 2 O) 180ml of aqueous solution was impregnated on the catalyst precu...

Embodiment 2

[0054] Preparation of hydrogenation catalyst:

[0055] ① Ammonium chloroplatinite containing 2.05gPt ((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;

[0056] ② Standing and aging for 24 hours to obtain catalyst precursor II;

[0057] 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;

[0058] ④ washed with water to no chloride ion, dried at 50°C for 4 hours to obtain catalyst precursor IV;

[0059] ⑤The lead acetate (Pb(OAc) containing 1.90g Pb 2 ·3H 2 O) 180 ml of an aqueous solution was impregnated on the catalyst precur...

Embodiment 3

[0089] Preparation of hydrogenation catalyst:

[0090] ① Ammonium chloroplatinite containing 2.05gPt ((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;

[0091] ② Standing and aging for 24 hours to obtain catalyst precursor II;

[0092] 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;

[0093] ④ washed with water to no chloride ion, dried at 50°C for 4 hours to obtain catalyst precursor IV;

[0094] ⑤ Sn(OAc) containing 1.90g Sn 2 2H 2 O) Dissolved in 10wt% acetic acid aqueous solution to obtain 180 ml of impregnating solut...

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Abstract

The invention relates to a hydrogenation catalyst for synthesizing 1,4-diacetoxybutane. The catalyst mainly solves the problems of low yield and low selectivity of 1,4-diacetoxybutane in the prior art. The hydrogenation catalyst for synthesizing 1,4-diacetoxybutane comprises a carrier and active components, the carrier is activated carbon, the active components comprise a Pt element and a cocatalyst element, and the cocatalyst element comprises at least one metal element selected from lanthanide metals and at least one metal element from IVA group metals. The catalyst well solves the technical problems, and can be used in the industrial production of the 1,4-diacetoxybutane.

Description

technical field [0001] The present invention relates to a hydrogenation catalyst used in the synthesis 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 h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/62B01J23/63C07C67/283C07C69/16
Inventor 查晓钟杨运信
Owner CHINA PETROLEUM & CHEM CORP