Alkyltransfering catalyst for increasing yield C8 aromatic hydrocarbons

A technology of transalkylation and C8 aromatics, which is applied in molecular sieve catalysts, physical/chemical process catalysts, hydrocarbons, etc., can solve the problems of easy coking and deactivation of catalysts, low product yields, etc., and achieve high and good yields. Technical effect, effect that is not easy to be deactivated

Active Publication Date: 2007-10-03
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The technical problem to be solved by the present invention is that in the prior art, heavy aromatics with carbon nine and above are used as raw materials, the yield of the target product is low when preparing light aromatics, and the catalyst is easy to coke and deactivate. Catalyst for increasing the production of C8 aromatics with C9 and above heavy aromatics

Method used

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  • Alkyltransfering catalyst for increasing yield C8 aromatic hydrocarbons
  • Alkyltransfering catalyst for increasing yield C8 aromatic hydrocarbons

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] use Na 2 O content less than 0.15% (weight), SiO 2 / Al 2 o 3 66.7 grams of ammonium mordenite powder with a molecular ratio of 21.5 and Na 2 α-Al with an O content of less than 0.15% by weight 2 o 3 ·H 2 O 57.1 grams were evenly mixed, and then impregnated with chloroplatinic acid as an aqueous solution. Add the dilute nitric acid solution of lead nitrate and cerium nitrate to the impregnated powder, knead fully and evenly, extrude and roast to make catalyst A.

Embodiment 2

[0028] use Na 2 O content less than 0.15% (weight), SiO 2 / Al 2 o 3 66.7 grams of ammonium mordenite powder with a molecular ratio of 25.9 and Na 2 α-Al with an O content of less than 0.15% by weight 2 o 3 ·H 2 O 57.1 grams were uniformly mixed, then a certain amount of dilute nitric acid solution, zirconium oxychloride and stannous chloride were added, fully kneaded, extruded, roasted, then impregnated with chloroplatinic acid solution, roasted to make catalyst B.

Embodiment 3

[0030] Use a certain concentration of tetraammonium platinum chloride or tetraammonium platinum nitrate solution 2 O content less than 0.15% (weight), SiO 2 / Al 2 o 3 Ammonium mordenite with a molecular ratio of 18.9 was exchanged, and after drying, 66.7 grams of dry powder was weighed with Na 2α-Al with an O content of less than 0.15% by weight 2 o 3 ·H 2 O 57.1 grams were uniformly mixed, then a certain amount of dilute nitric acid solution, lead nitrate solution and lanthanum nitrate were added, fully kneaded, extruded and roasted to make catalyst C.

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Abstract

A transalkylation catalyst for increasing the output of C8 arylhydrocarbon contains the hydrogen-type zeolite containing SiO2/Al2O3 (20-90 Wt portions), adhesive (10-80) and platinum oxide (0.001-5).

Description

technical field [0001] The invention relates to a transalkylation catalyst for increasing the production of C8 aromatics, in particular to a catalyst capable of maximally increasing the production of C8 aromatics by using only heavy aromatics of C9 and above as raw materials through transalkylation and dealkylation reactions catalyst. Background technique [0002] The p-xylene in the C8 aromatics is one of the main basic organic raw materials in the petrochemical industry, and it has a wide range of uses in many chemical production fields such as chemical fibers, synthetic resins, pesticides, medicines, and plastics. In order to increase xylene production, use toluene disproportionation or toluene and carbon nine and above heavy aromatics (C 9 + A) disproportionation and transalkylation reaction to generate benzene and C 8 A, by increasing the production of C8 aromatics (C 8 A) Reach the purpose of effectively increasing p-xylene. [0003] ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J29/06B01J23/62C07C6/00C07C4/06C07C15/02
Inventor 郭宏利杨德琴孔德金
Owner CHINA PETROLEUM & CHEM CORP
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