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Catalysts for making ethanol from acetic acid

A catalyst and ethanol technology, applied in the direction of catalyst activation/preparation, physical/chemical process catalyst, heterogeneous catalyst chemical elements, etc., can solve the problem that the catalyst does not have the necessary selectivity, the catalyst life is insufficient, and the ethanol production is non-selective, etc. question

Inactive Publication Date: 2012-01-25
CELANESE INT CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] Existing methods suffer from various problems that hinder commercial viability, including: (i) the catalyst does not have the necessary selectivity for ethanol; (ii) the catalyst may be too expensive and / or non-selective for ethanol production and produce unwanted by-products; and / or (iii) insufficient catalyst life

Method used

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  • Catalysts for making ethanol from acetic acid
  • Catalysts for making ethanol from acetic acid
  • Catalysts for making ethanol from acetic acid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0135] Example 1 - SiO 2 -CaSiO 3 (5)-Pt(3)-Sn(1.8) catalyst

[0136] The catalyst was firstly prepared by CaSiO 3 (Aldrich) added to SiO 2 Catalyst support, followed by adding Pt / Sn for preparation. First, CaSiO 3 (≤200 mesh) aqueous suspension by adding 0.52 g of the solid to 13 ml of deionized water, followed by adding 1.0 ml of colloidal SiO 2 (15% by weight solution, MALCO) for preparation. The suspension was stirred at room temperature for 2 h, and then 10.0 g of SiO was added using the incipient wetness impregnation technique 2 Catalyst support (14 / 30 mesh). After standing for 2 hours, the material was evaporated to dryness, then dried overnight at 120° C. under circulating air and calcined at 500° C. for 6 hours. Then all SiO 2 -CaSiO 3 Material for Pt / Sn metal impregnation.

[0137] The catalyst is obtained by first adding Sn(OAc) 2 (tin acetate, Sn(OAc) from Aldrich 2 ) (0.4104 g, 1.73 mmol) was prepared by adding to a vial containing 6.75 ml of 1:1 dilu...

Embodiment 2-KA16

[0138] Example 2-KA160-CaSiO 3 (8)-Pt(3)-Sn(1.8)

[0139] The material is prepared by first adding CaSiO 3 Added to KA160 catalyst carrier (SiO 2 -(0.05)Al 2 o 3 , Sud Chemie, 14 / 30 mesh), followed by the addition of Pt / Sn for preparation. First, CaSiO 3 (≤200 mesh) aqueous suspension by adding 0.42 g of the solid to 3.85 ml of deionized water, followed by adding 0.8 ml of colloidal SiO 2 (15% by weight solution, NALCO) for preparation. The suspension was stirred at room temperature for 2 hours and then 5.0 g of KA160 catalyst support (14 / 30 mesh) were added using the incipient wetness impregnation technique. After standing for 2 hours, the material was evaporated to dryness, then dried overnight at 120° C. under circulating air and calcined at 500° C. for 6 hours. Then all KA160-CaSiO 3 Material for Pt / Sn metal impregnation.

[0140] The catalyst is obtained by first adding Sn(OAc) 2 (tin acetate, Sn(OAc) from Aldrich 2 ) (0.2040 g, 0.86 mmol) was added to a vial ...

Embodiment 3

[0141] Example 3 - SiO 2 -CaSiO 3 (2.5)-Pt(1.5)-Sn(0.9)

[0142] The catalyst was prepared in the same manner as in Example 1 with the following starting material: 0.26 g CaSiO 3 As a carrier modifier; 0.5ml colloidal SiO 2 (15% by weight solution, MALCO), 0.3355g (0.86mmol) of Pt(NH 3 ) 4 (NO 3 ) 2 ; and 0.2052 g (0.86 mmol) of Sn(OAc) 2 . Yield: 10.90 g dark gray material.

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Abstract

Catalysts and processes for forming catalysts for use in hydrogenating acetic acid to form ethanol. In one embodiment, the catalyst comprises a first metal, a silicaceous support, and at least one metasilicate support modifier. Preferably, the first metal is selected from the group consisting of copper, iron, cobalt, nickel, ruthenium, rhodium, palladium, osmium, iridium, platinum, titanium, zinc, chromium, rhenium, molybdenum, and tungsten. In addition the catalyst may comprise a second metal preferably selected from the group consisting of copper, molybdenum, tin, chromium, iron, cobalt, vanadium, tungsten, palladium, platinum, lanthanum, cerium, manganese, ruthenium, rhenium, gold, and nickel.

Description

[0001] priority claim [0002] This application claims priority to US Application Serial No. 12 / 588,727, filed October 26, 2009, entitled "Tunable Catalyst Gas Phase Hydrogenation of Carboxylic Acids," which is hereby incorporated by reference in its entirety. field of invention [0003] The present invention relates generally to catalysts for use in processes for the hydrogenation of acetic acid to form ethanol, the catalysts having high selectivity for ethanol. Background of the invention [0004] There is a long-felt need for an economically viable process and catalyst for the conversion of acetic acid to ethanol, which can be used as such or subsequently converted to ethylene, an important commodity feedstock because it can be converted to vinyl acetate esters and / or ethyl acetate or any of many other chemical products. For example, ethylene can also be converted into a number of polymer and monomer products. Fluctuating natural gas and crude oil prices help to fluctua...

Claims

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Application Information

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IPC IPC(8): B01J21/16B01J23/62B01J23/652B01J23/656B01J23/80B01J23/835B01J23/883B01J23/89C07C29/149
CPCB01J23/6567C07C1/24B01J37/0201B01J21/16B01J23/626B01J23/002B01J2523/00B01J37/08B01J37/0207C07C29/149Y02P20/52C07C11/04C07C31/08B01J2523/27B01J2523/41B01J2523/43B01J2523/828B01J2523/22B01J2523/23B01J2523/69B01J2523/845
Inventor V・J・约翰斯顿L・陈B・F・金米奇J・T・查普曼J・H・津克H・魏纳J・L・波茨R・耶夫蒂奇
Owner CELANESE INT CORP
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