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Catalyst for the direct preparation of ethanol from acetic acid, its preparation method and use

A catalyst and acetic acid technology, applied in the field of catalytic chemistry, can solve the problems of high requirements for reaction temperature and reaction pressure, high catalyst cost, harsh conditions, etc., and achieve the effect of cost reduction

Active Publication Date: 2016-01-20
XINDI ENERGY ENG TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the catalyst of Celanese Corporation, the loading (i.e., content) of noble metal platinum (Pt) is high, all above 0.1wt%, and most of them are above 0.5~2wt%, which makes the cost of the prepared catalyst high
At the same time, although the existing catalysts using non-noble metals can reduce costs, they require high reaction temperature and reaction pressure, harsh conditions, and greatly reduce commercial operability.

Method used

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  • Catalyst for the direct preparation of ethanol from acetic acid, its preparation method and use
  • Catalyst for the direct preparation of ethanol from acetic acid, its preparation method and use
  • Catalyst for the direct preparation of ethanol from acetic acid, its preparation method and use

Examples

Experimental program
Comparison scheme
Effect test

Embodiment A

[0048] Preparation of Pt0.01%-Sn0.01% / SiO 2 Catalyst (no non-precious metal components, for comparison)

[0049] Mix the aqueous solution (0.67ml) of chloroplatinic acid (0.027g) and the dilute nitric acid solution (1ml) of tin oxalate (0.017g) and add water to form a 72.6ml impregnation solution, add it to 100g of silicon dioxide, and add it as you go. After stirring, the obtained material was dried in an oven gradually heated to 110° C. for 2 hours, and then calcined in a muffle furnace at 500° C. (heating rate, 2° C. / min) for 4 hours to obtain a catalyst sample.

Embodiment B

[0051] Preparation of Pt0.09%-Sn0.09% / SiO 2 Catalyst (no non-precious metal components, for comparison)

[0052] Mix an aqueous solution (6.03ml) of chloroplatinic acid (0.243g) and a dilute nitric acid solution (1ml) of tin oxalate (0.153g) and add water to form a 72.6ml impregnating solution, which is added to 100g of silicon dioxide and added while adding After stirring, the obtained material was dried in an oven gradually heated to 120° C. for 3 hours, and then calcined in a muffle furnace at 500° C. (heating rate, 2° C. / min) for 4 hours to obtain a catalyst sample.

Embodiment C

[0054] Preparation of Pt0.09%-Sn0.09%-Ni15% / SiO 2 Catalyst (catalyst according to the invention)

[0055] Mix an aqueous solution (6.03ml) of chloroplatinic acid (0.243g), a dilute nitric acid solution (1ml) of tin oxalate (0.153g) and an aqueous solution (50ml) of nickel nitrate (74.17g) and add water to form a 72.6ml impregnation solution , added to 100g of silicon dioxide, and stirred while adding, the obtained material was dried in an oven gradually heated to 110°C for 2 hours, and then roasted in a muffle furnace at 600°C (heating rate, 2°C / min) for 3 hours, the catalyst sample was obtained.

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Abstract

The invention provides a catalyst for preparing ethanol directly by acetic acid as well as a preparation method and use thereof. More specific, the invention provides the catalyst for preparing ethanol directly by acetic acid. The catalyst comprises an active ingredient composition loaded on a carrier. The active ingredient composition comprises platinum and stannum as well as any one base metal in a group formed by free copper, molybdenum, tungsten, nickel, rhenium, chromium, vanadium and zinc. The content of platinum in the catalyst is 0.01-0.09wt%, and the weight ratio of platinum and stannum is Pt / Sn=1. The content of the base metal is 0.01-20wt%. Ethanol can be selectively prepared by the catalyst at a lower temperature, and the loading amount of noble metal platinum in the catalyst is lower, so that the catalyst is lower in cost and is equivalent or better than similar products in level.

Description

technical field [0001] The invention belongs to the field of catalytic chemistry, and more specifically, the invention relates to a catalyst for directly preparing ethanol from acetic acid, a preparation method and application thereof. Background technique [0002] As a basic organic chemical raw material, ethanol is widely used in chemical and other industrial fields. It can be used as a disinfectant, solvent, and organic chemical raw material for the production and manufacture of paints, coatings, dyes, inks and pharmaceuticals. It is also mainly used as vehicle fuel. At present, the annual demand of China's chemical ethanol market is about 3 million tons, with an annual growth rate of 8%-10%. In the field of fuel ethanol, the current demand in the Chinese market is about 1.5 million tons per year, and the industry is expected to usher in rapid growth, which is expected to reach 10 million tons in 2020. [0003] The production methods of ethanol include ethylene hydratio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/89B01J23/652C07C31/08C07C29/149
Inventor 蒋建明常俊石苏海兰高珠张建祥史立杰马超高丽
Owner XINDI ENERGY ENG TECH
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