Bismuth- and phosphorus-containing catalysts support, reforming catalysts made from same, method of making and naphtha reforming process

A catalyst carrier, catalyst technology, applied in the direction of catalyst carrier, reformed naphtha, naphtha catalytic reforming, etc.

Inactive Publication Date: 2005-08-17
INST FR DU PETROLE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Catalysts with acceptable selectivity and higher activity are also desired because they can be operated at lower reactor inlet temperatures while maintaining the same conversion (octane number) or operating at the same temperature , but the conversion rate (octane number) increased

Method used

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  • Bismuth- and phosphorus-containing catalysts support, reforming catalysts made from same, method of making and naphtha reforming process
  • Bismuth- and phosphorus-containing catalysts support, reforming catalysts made from same, method of making and naphtha reforming process
  • Bismuth- and phosphorus-containing catalysts support, reforming catalysts made from same, method of making and naphtha reforming process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] This example describes the preparation of five catalyst supports of the present invention, each containing different concentrations of bismuth.

[0034] Support A was prepared as follows: 1 kg of gamma-alumina and 627 g of alumina sol were mixed in a mixer for 10 minutes. With the mixer running, 9.1 g of 85 wt% H 3 PO 4 Add slowly and continue stirring for about 1 more minute. The bismuth solution for Carrier A defined in Table 1 was then added to the mixer and stirring was continued for an additional 7 minutes to form an extrudable paste. The paste was extruded into 1.6 mm diameter balls and dried overnight at 125°C. The balls were then sieved to a major length of 4-6mm and calcined at 660°C for 1.5 hours. Finished carrier A had the composition shown in Table 1.

[0035] Vectors B, C, D, and E were prepared in the same manner, except that solution A was replaced with the solution shown in Table 1 for each carrier.

[0036] carrier

[0037] A small sam...

Embodiment 2

[0039] (for comparison)

[0040] This example describes the preparation methods of three traditional catalyst supports. In the support F comprising alumina, the concentration of bismuth is the same as that of the support D in Example 1, i.e. 0.06 wt%; in the support G comprising alumina, The concentration of phosphorus is the same as that of the carrier of Example 1, ie 0.3 wt%; the carrier H consists of pure alumina.

[0041] Carrier F was prepared as described in Example 1, except without the addition of H 3 PO 4 . Vehicle G was prepared as described in Example 1, except that the Bi / dexmannitol solution was omitted. Carrier H was prepared in a similar manner, except without the addition of H 3 PO 4 and Bi / dexmannitol solution.

Embodiment 3

[0043] This example describes the preparation of five catalysts of the invention, each containing different concentrations of bismuth in its support.

[0044] Prepare five impregnating solutions, the preparation methods of which are: 0.77ml concentrated HNO 3 , 1.97 ml of concentrated (12M) HCl and 0.660 g of chloroplatinic acid solution (expressed as CPA, 29.7 wt% Pt) were mixed with 30 ml of deionized water. These solutions were stirred and an additional 120 ml of deionized water was added to bring the total volume of each impregnation solution to 150 ml. These solutions were then placed in 500 ml graduated cylinders and circulated by means of a peristaltic pump. In addition, CO 2 Gas is bubbled very slowly into the solution through a gas dispersion tube placed at the bottom of the graduated cylinder. Those of ordinary skill in the art know that this is done to provide HCO that can compete with Pt and Re for the alumina surface. 3 - Anions, in order to better distribute...

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Abstract

Bismuth- and phosphorus-containing catalyst supports, naphtha reforming catalysts made from such supports, methods of making both support and catalyst, and a naphtha reforming process using such catalysts.

Description

technical field [0001] The present invention relates to a catalyst carrier containing bismuth and phosphorus, a naphtha reforming catalyst prepared using the carrier, a method for preparing the carrier and the catalyst, and a naphtha reforming method using the catalyst. Background technique [0002] Catalytic naphtha reforming is the conversion of low-octane-rich paraffin and naphthene naphtha into high-octane aromatic-rich C 5 + Liquid reformate and hydrogen (H 2 ) important refining process. Petroleum refineries have been seeking to provide high selectivity (i.e. C 5 +Liquid and H 2 High yield), high activity, low coking rate and high selectivity and / or activity stability of reforming catalysts with improved performance. More selective catalysts are needed to make valuable C 5 +Liquid and H 2 maximizes the yield, making the less desirable C 1 -C 4 The yield of gaseous products is minimized. Catalysts with acceptable selectivity and higher activity are also desired...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/42B01J23/644B01J23/656B01J27/13B01J27/185B01J27/186B01J27/187B01J32/00B01J37/00B01J37/02C10G35/085C10G35/09
CPCB01J23/6447B01J23/6567B01J27/13B01J27/1856B01J27/186B01J27/187B01J37/0009B01J37/0201B01J37/0207C10G35/085C10G35/09B01J21/04B01J27/192B01J23/42
Inventor P·T·坦弗
Owner INST FR DU PETROLE
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