FR2262654A1 - Hydrodealkylation of alkylaromatics under mild conditions - using catalysts with two metal components - Google Patents
Hydrodealkylation of alkylaromatics under mild conditions - using catalysts with two metal componentsInfo
- Publication number
- FR2262654A1 FR2262654A1 FR7407340A FR7407340A FR2262654A1 FR 2262654 A1 FR2262654 A1 FR 2262654A1 FR 7407340 A FR7407340 A FR 7407340A FR 7407340 A FR7407340 A FR 7407340A FR 2262654 A1 FR2262654 A1 FR 2262654A1
- Authority
- FR
- France
- Prior art keywords
- pref
- hydrodealkylation
- catalysts
- alkylaromatics
- metal components
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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- C07C4/00—Preparation of hydrocarbons from hydrocarbons containing a larger number of carbon atoms
- C07C4/08—Preparation of hydrocarbons from hydrocarbons containing a larger number of carbon atoms by splitting-off an aliphatic or cycloaliphatic part from the molecule
- C07C4/12—Preparation of hydrocarbons from hydrocarbons containing a larger number of carbon atoms by splitting-off an aliphatic or cycloaliphatic part from the molecule from hydrocarbons containing a six-membered aromatic ring, e.g. propyltoluene to vinyltoluene
- C07C4/14—Preparation of hydrocarbons from hydrocarbons containing a larger number of carbon atoms by splitting-off an aliphatic or cycloaliphatic part from the molecule from hydrocarbons containing a six-membered aromatic ring, e.g. propyltoluene to vinyltoluene splitting taking place at an aromatic-aliphatic bond
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Abstract
The catalytic hydrodealkylation of alkylaromatic hydrocarbons is carried out at 400-650 degrees C (pref. 500-620 degrees C) and 1-40 (pref. 1-30, esp. 1-20) kg/cm2 with an LHSV of 1-10 (pref. 2-8) and an H2/product molar ratio of 1-10 (pref. 3-8) in the presence of catalyst A or B, where catalyst A comprises (a) a support, (b) 0.05-20 (pref. 1-17) wt% Co and/or 0.05-5 (pref. 0.1-1) wt% Ru, Os, Pd, Rh, Ir and/or Pt, and (c) 0.05-5 (pref. 0.1-2) wt% of Zn, Cd, Ga, In, Tl, Mn, Cu, Ag, Au, Y, Ti, Nb and/or Ta, and catalyst B comprises (a) a support, (b) 0.05-20 (pref. 0.1-10) wt% Cr, Mo, W, Re and/or Mn, and (c) 0.05-20 (pref. 0.1-5) wt% of one or more metals, different from (a), selected from Cr, Mo, W, Re, Mn Cu, Ag, Au, Zn, Cd, Ga, In, Tl, Ge, Sn and Pb. These catalysts allow the use of process conditions which are much less severe than those used in conventional process, thus reducing the formation of coke precursors (higher aromatics).
Priority Applications (10)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7407340A FR2262654A1 (en) | 1974-03-01 | 1974-03-01 | Hydrodealkylation of alkylaromatics under mild conditions - using catalysts with two metal components |
FR7502678A FR2298525A2 (en) | 1974-03-01 | 1975-01-27 | Hydro dealkylation of alkyl aromatic hydrocarbons - on a catalyst contg. cobalt and a second metal component |
BE1006447A BE825345A (en) | 1974-03-01 | 1975-02-10 | PROCESS FOR HYDRODEALKYLATION OF AROMATIC ALKYL HYDROCARBONS |
US05/552,278 US3992468A (en) | 1974-03-01 | 1975-02-24 | Process for the catalytic hydrodealkylation of alkylaromatic hydrocarbons |
DE19752508291 DE2508291A1 (en) | 1974-03-01 | 1975-02-26 | PROCESS FOR THE HYDRO-DEALKYLATION OF ALKYLAROMATIC HYDROCARBONS |
GB8093/75A GB1505112A (en) | 1974-03-01 | 1975-02-26 | Catalytic hydrodealkylation of alkylaromatic hydrocarbons |
IT20802/75A IT1033322B (en) | 1974-03-01 | 1975-02-28 | PROCEDURE OF HYDRODEALKYLATION OF AROMATIC ALKYL HYDROCARBONS |
CA221,043A CA1067104A (en) | 1974-03-01 | 1975-02-28 | Process for the hydrodealkylation of alkylaromatic hydrocarbons |
NL7502435A NL7502435A (en) | 1974-03-01 | 1975-02-28 | PROCEDURE FOR HYDRO-DEALKYLATION OF ALKYL-AROMATIC HYDROCARBONS. |
JP50025545A JPS50121233A (en) | 1974-03-01 | 1975-03-01 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7407340A FR2262654A1 (en) | 1974-03-01 | 1974-03-01 | Hydrodealkylation of alkylaromatics under mild conditions - using catalysts with two metal components |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2262654A1 true FR2262654A1 (en) | 1975-09-26 |
FR2262654B1 FR2262654B1 (en) | 1979-01-05 |
Family
ID=9135809
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7407340A Granted FR2262654A1 (en) | 1974-03-01 | 1974-03-01 | Hydrodealkylation of alkylaromatics under mild conditions - using catalysts with two metal components |
Country Status (2)
Country | Link |
---|---|
BE (1) | BE825345A (en) |
FR (1) | FR2262654A1 (en) |
-
1974
- 1974-03-01 FR FR7407340A patent/FR2262654A1/en active Granted
-
1975
- 1975-02-10 BE BE1006447A patent/BE825345A/en unknown
Also Published As
Publication number | Publication date |
---|---|
BE825345A (en) | 1975-08-11 |
FR2262654B1 (en) | 1979-01-05 |
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