Treating of catalyst support

a catalyst and support technology, applied in the field of catalyst support treatment, can solve the problems of lowering manufacturing costs, and achieve the effect of reducing catalyst stability

Inactive Publication Date: 2015-07-23
VELOCYS TECH LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0016]The metal source used in step (a) may comprise a chromium metal source. The use of a chromium metal source may provide a chromium oxide-modified catalyst support that can be used to generate catalysts with particularly good CO conversion levels and can thus function well as a Fischer-Tropsch catalyst. Preferably, the chromium metal source comprises chromium (III) nitrate nonahydrate.
[0184]The cooling of the process microchannels during the reaction is advantageous for controlling selectivity towards the main or desired product due to the fact that such added cooling reduces or eliminates the formation of undesired by-products from undesired parallel reactions with higher activation energies. As a result of this cooling, the temperature of the reactant composition at the entrance to the process microchannels may be within about 200° C., within about 150° C., within about 100° C., within about 50° C., within about 25° C., within about 10° C., of the temperature of the product (or mixture of product and unreacted reactants) at the exit of the process microchannels.

Problems solved by technology

Furthermore, the use of aqueous methods, compared to non-aqueous methods, often results in a lowering of manufacturing costs.

Method used

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Examples

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example 1

Synthesis of ZrO2-Modified Silica Catalyst Support (22% ZrO2 / SiO2) Using Method a (Supports A1 to A3)

[0192]Silica A bare catalyst support material was dried at 100° C. for 2 hours. 31.4 g of silica was weighed and allowed to cool to room temperature. 8.82 g citric acid was mixed with 12 ml H2O and heated to about 50° C. with stirring until fully dissolved. The solution was then allowed to cool to room temperature. 16.22 g zirconium dinitrate oxide hydrate (also known as “zirconyl nitrate”) was mixed with 15 ml H2O and stirred using a magnetic stirbar, without heat, for 20 minutes to obtain a translucent solution. The zirconyl nitrate solution and citric acid solution were mixed together to form the impregnation solution. The impregnation solution was used immediately after preparation to impregnate the silica support. The support was impregnated by mixing the impregnation solution and the silica in order to reach the point of incipient wetness.

[0193]Following impregnation, a portion...

example 2 (

Reference)

Synthesis of ZrO2-Modified Silica Catalyst Support (22% ZrO2 / SiO2) Using Method B (Support B)

[0198]Silica A bare catalyst support material was dried at 100° C. for 2 hours. 31.4 g of silica was weighed and allowed to cool to room temperature. The impregnation solution was prepared by mixing 16.22 g zirconyl nitrate with 30 ml H2O and stirring using a magnetic stirbar, without heat, for 20 minutes to obtain a translucent solution with a total volume of 33 ml. The impregnation solution was used immediately after preparation to impregnate the silica support. The support was impregnated by mixing the impregnation solution and the silica in order to reach the point of incipient wetness.

[0199]Following impregnation, the modified catalyst support was dried in a muffle furnace at a temperature that increased at a ramp rate of 2° C. / min up to 100° C. The temperature was held at 100° C. for 10 hours (support B, code 1112-13-005-4).

[0200]The resulting catalyst support B had ZrO2 boun...

example 3

Synthesis of Mn2O3-modified Silica Catalyst Support (15% Mn2O3 / SiO2) Using Method a (Support C)

[0201]Silica A bare catalyst support material was dried at 100° C. for 2 hours. 16.8 g of silica was weighed and allowed to cool to room temperature. 4.71 g citric acid was mixed with 8 ml H2O and heated to about 50° C. with stirring until fully dissolved. The solution was cooled to about 35° C., then 9.57 g of manganese nitrate was added and the solution was stirred until fully dissolved. The volume of the solution was adjusted to 19 ml with H2O to form the impregnation solution and then allowed to cool to room temperature. The impregnation solution was used to impregnate the silica support by mixing the impregnation solution and the silica in order to reach the point of incipient wetness.

[0202]Following impregnation, the modified catalyst support was dried in a muffle furnace at a temperature that increased at a ramp rate of 2° C. / min up to 100° C. The temperature was held at 100° C. for...

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Abstract

A method for the preparation of a modified catalyst support comprising: (a) treating a catalyst support material with an aqueous solution or dispersion comprising one or more zirconium metal sources, chromium metal sources, manganese metal sources and aluminium metal sources, and one or more polar organic compounds; and (b) drying the treated support, and (c) optionally calcining the treated support. Also provided are catalyst support materials obtainable by the methods, and catalysts prepared from such supports.

Description

INTRODUCTORY PARAGRAPH[0001]The present invention relates to a method for the preparation of a modified catalyst support and the catalyst supports formed using this method. The present invention also relates to catalyst precursors and catalysts formed on the modified catalyst support.[0002]The supports, precursors and catalysts of the present invention are particularly suitable for use in Fischer-Tropsch reactions.BACKGROUND[0003]All documents cited herein are incorporated by reference in their entirety.[0004]The modification of catalyst supports has conventionally been carried out using organic solvents, as described in, for example, Bouh et al., J. Am. Chem. Soc, 121 (1999) 7201, Bu et al., Advanced Materials Research, 194 (2011) 1807 and US patent application US 2010 / 0024874 A1. In the modern era, there is a continual push towards more environmentally friendly, or “greener”, technologies. This push has caused considerable interest in water-based processes in the catalyst manufact...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): B01J37/08B01J21/08B01J23/34C10G2/00B01J23/89B01J37/16B01J19/00B01J8/00B01J37/02B01J23/26
CPCB01J37/088B01J37/0203B01J21/08B01J23/34B01J23/26B01J23/8913B01J2219/00781B01J19/0093B01J8/00C10G2/33C10G2/34C10G2/333B01J2208/00796B01J37/16B01J21/04B01J21/06B01J21/12B01J23/75B01J23/8986B01J23/8993B01J35/00B01J35/0046B01J35/0053B01J35/006B01J35/0066B01J35/10B01J35/1014B01J35/1019B01J35/1038B01J35/1042B01J35/1061B01J37/02B01J37/0205B01J37/0207B01J37/0213B01J37/08B01J37/18B01J2219/00835B01J2219/00873C07C1/043C10G2/00
Inventor RICHARD, LAURADALY, FRANK
Owner VELOCYS TECH LTD
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