CA1193238A - Catalyst based on gamma alumina, and its method of preparation - Google Patents
Catalyst based on gamma alumina, and its method of preparationInfo
- Publication number
- CA1193238A CA1193238A CA000428978A CA428978A CA1193238A CA 1193238 A CA1193238 A CA 1193238A CA 000428978 A CA000428978 A CA 000428978A CA 428978 A CA428978 A CA 428978A CA 1193238 A CA1193238 A CA 1193238A
- Authority
- CA
- Canada
- Prior art keywords
- moles
- sio2
- catalyst
- mexoy
- gamma alumina
- 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.)
- Expired
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
- B01J23/74—Iron group metals
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J21/00—Catalysts comprising the elements, oxides, or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium, or hafnium
- B01J21/02—Boron or aluminium; Oxides or hydroxides thereof
- B01J21/04—Alumina
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/02—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the alkali- or alkaline earth metals or beryllium
- B01J23/04—Alkali metals
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/08—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of gallium, indium or thallium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/10—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of rare earths
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C5/00—Preparation of hydrocarbons from hydrocarbons containing the same number of carbon atoms
- C07C5/22—Preparation of hydrocarbons from hydrocarbons containing the same number of carbon atoms by isomerisation
- C07C5/23—Rearrangement of carbon-to-carbon unsaturated bonds
- C07C5/25—Migration of carbon-to-carbon double bonds
- C07C5/2506—Catalytic processes
- C07C5/2512—Catalytic processes with metal oxides
Abstract
CATALYST BASED ON GAMMA ALUMINA, AND ITS METHOD OF PREPARATION
Abstract Or the Disclosure A catalyst based on gamma alumina, constituted by gamma alumina stabilised by silica containing oxides of bivalent or trivalent metals chosen from those of Group II A and/or VIII and/or III B
and/or lanthanides.
The catalyst is particularly active in isomerisation reactions.
Abstract Or the Disclosure A catalyst based on gamma alumina, constituted by gamma alumina stabilised by silica containing oxides of bivalent or trivalent metals chosen from those of Group II A and/or VIII and/or III B
and/or lanthanides.
The catalyst is particularly active in isomerisation reactions.
Description
32~
This invention relates to a catalyst based on gam~a alumin~, and its method of preparation.
Catalyst$ based on ga~na alumina are known, but they h~ve ~ coc high ac;dity for cer~ain reactions, and in pa~ticular for bond isomerisation reactions~
Moreover, the acidi~y i5 increased when the gamma alumina is treated with silica in orde to ma1te it thermally stable, for example in accordance wi~h the methods described in USA patents R.E. 30668, 4,013,590 and 4,0l3,589.
On the other hand~ s~abilisation by means of silica is necessary in order to make the alumina sui~able for high temperature regenera~ion without it losing its ac~ivity.
It has now been surprisingly found possible on the one hand to reduce lS the acidity of ga~a alumina-based catalysts in such a manner as to also make them sui~able for bond isomerisation xeactions, while on the o~her hand not reducing their the~al stability charaeteristics, by addine one or more oxides of the metals of Group II A and/or VIII
and/or III B and¦or lanthanides to the silica~stabilised gamma alumina ~omposition, The catalyst based on gam~a alumina ace~ding to the present inYen~iGr satisfies the general formula a Al203. b SiO2~ o MexOy where MexOy is the oxide of one or more of the metals of Groups II A
and/or ~III and/orIII B and~or lan~hanides, and a. h~ c are the number oE Moles of Al~03, SiO2 and Me Oy respectivelyg b and e bein~
related by ~he rela~ionship c ~ m.b ~ B
. .
~3~
where B has a value greater ~han or equal to 0.01 and b has a valuc be~ween 0.020 and 0.250, the ra~io (b~c)/a being bet~een 0.01 and 9~0, and m being a number between 0.7 and 0.1.
In the specific case oE calciump the moles of CaO are related to the S moles of SiO2 by the relationship Moles CaO >~ 0.500 x moles SiO2 ~ 0.030 In the case of barium, the moles of BaO are related t~ the mole~ of SiO2 by the relationship Moles BaO ~ 0~500 x moles SiO2 ~ 0.020 ; 10 In the case of lanthanu~ the moles of La203 are related to th~ mo]es of SiO~ by the relationship Moles La203 ~ 0.257 x moles SiO~ ~ 0.014 In the case of iron, the moles of Fe203 are related to ~he moles of SiO2 by the rela~ionship Moles Fe203 ~ 0.290 x moles SiO2 ~ 0.018 Xn these four particular cases, the moles oE SiO2 and the ratio (~*c)/a are as heretofore indicated.
The catalyst according to the present invention is particularly uséful in olefin bond isomeris~tion reactions, and in particular in the i~o-merisatior. of bueene-2 to bu~ene 1~
To prepare the catalyst accordin8 to the invention, the gamma alumina stabilise~ by any one of the procedures described in the aforesaid USA patents is Lmpregnated with aqueous s~lutions of salts of the metals of Groups II A and/or VIIl andlor III B and/or lanthanides3 preferably a~ueous solutions of nitrates or acetatesO
Some examples are given hereinafter in order to betSer illustrate the ~nvention, but these are not ~ be taken as lLmi~in~ ~hereof, E~AMPLE 1 !
3~
20g o~ gamma alumina (S.A. 200 m2/g) are t~eated ~ith 15 cc of an alcohol solution containing 0.75 ~ of Dynasil ~ ~0 (solution of ethylene orthosilicate at 40%).
The mixture is allowed to react for two hours at 50 Cs it is then drained off and treated with steam in order to hydrolyse the silanol ~roups. It is dried and calcined at SOO C for 4 hours.
The material obtained in this ~lanne~, containing 1.5% of SiO2, is impregnated with 15 cc oE an aqueous solution con~a ~ing 5.90 g oi lanthanum nitrate.
The imprecnated material i.s then dried and calcined at 500C for 4 hours, A ma~erial is obtained constituted by gamma alurnina stabilised by l,S% of SiO2, and contai.ning 107~ oE La2O3.
This catalyst is fed into a reactor, in ~hich trans butene-2 i.s isomerised by reaction at a temperature of b~70 C9 atmospheric pressure and a weigh~ hour space velocity (I~HSV) of 6h 1, The catalyst is able to produce butene-l with an i.sobutene content of only 140 ppmJ
After thermal treatment for 24 hours at 1000 C, the catalyst has a surEaoe area of 113 m /g, and shows no loss of activi.ty after 40 reaction cycles ~332 hours in total) and 40 regeneration cycles (152 . hours in total).
The regeneration is carried ou~ at a temperature of 54~ C.
~5 Follo~ing the method described in Examp}e 1, a catalyst is prepared constituted by 1~5~o oE SiO2 ~ 2.5% of CaO on gamma alumina.
The calci~ll is impregnated usi.ng an aqueous solution (15 cc) of calcium nitrate (~-40 g)O
- l, -Dryin~ and calcining is again effected at 500 C for 4 hours.
The catalyst is fed into a reactor where trans butene-2 is isoraerised by reaction at a temperature of 470 C, atmospheric pressure and a ~eight hourly space v~locity (WHSV) of 6h The catalyst is able to produce butene-l with an isobutene content of only 150 ppm.
After thermal treatment for 24 hours at 1000 C, the catalyst has a surface area of 183 ra2/g~ and sho~s no loss of activity after 40 reaction cycles (332 hours in total) and 40 regeneration cycles (152 ho~rs n total)~
Regeneration is effected at a temperature of 540 C.
This invention relates to a catalyst based on gam~a alumin~, and its method of preparation.
Catalyst$ based on ga~na alumina are known, but they h~ve ~ coc high ac;dity for cer~ain reactions, and in pa~ticular for bond isomerisation reactions~
Moreover, the acidi~y i5 increased when the gamma alumina is treated with silica in orde to ma1te it thermally stable, for example in accordance wi~h the methods described in USA patents R.E. 30668, 4,013,590 and 4,0l3,589.
On the other hand~ s~abilisation by means of silica is necessary in order to make the alumina sui~able for high temperature regenera~ion without it losing its ac~ivity.
It has now been surprisingly found possible on the one hand to reduce lS the acidity of ga~a alumina-based catalysts in such a manner as to also make them sui~able for bond isomerisation xeactions, while on the o~her hand not reducing their the~al stability charaeteristics, by addine one or more oxides of the metals of Group II A and/or VIII
and/or III B and¦or lanthanides to the silica~stabilised gamma alumina ~omposition, The catalyst based on gam~a alumina ace~ding to the present inYen~iGr satisfies the general formula a Al203. b SiO2~ o MexOy where MexOy is the oxide of one or more of the metals of Groups II A
and/or ~III and/orIII B and~or lan~hanides, and a. h~ c are the number oE Moles of Al~03, SiO2 and Me Oy respectivelyg b and e bein~
related by ~he rela~ionship c ~ m.b ~ B
. .
~3~
where B has a value greater ~han or equal to 0.01 and b has a valuc be~ween 0.020 and 0.250, the ra~io (b~c)/a being bet~een 0.01 and 9~0, and m being a number between 0.7 and 0.1.
In the specific case oE calciump the moles of CaO are related to the S moles of SiO2 by the relationship Moles CaO >~ 0.500 x moles SiO2 ~ 0.030 In the case of barium, the moles of BaO are related t~ the mole~ of SiO2 by the relationship Moles BaO ~ 0~500 x moles SiO2 ~ 0.020 ; 10 In the case of lanthanu~ the moles of La203 are related to th~ mo]es of SiO~ by the relationship Moles La203 ~ 0.257 x moles SiO~ ~ 0.014 In the case of iron, the moles of Fe203 are related to ~he moles of SiO2 by the rela~ionship Moles Fe203 ~ 0.290 x moles SiO2 ~ 0.018 Xn these four particular cases, the moles oE SiO2 and the ratio (~*c)/a are as heretofore indicated.
The catalyst according to the present invention is particularly uséful in olefin bond isomeris~tion reactions, and in particular in the i~o-merisatior. of bueene-2 to bu~ene 1~
To prepare the catalyst accordin8 to the invention, the gamma alumina stabilise~ by any one of the procedures described in the aforesaid USA patents is Lmpregnated with aqueous s~lutions of salts of the metals of Groups II A and/or VIIl andlor III B and/or lanthanides3 preferably a~ueous solutions of nitrates or acetatesO
Some examples are given hereinafter in order to betSer illustrate the ~nvention, but these are not ~ be taken as lLmi~in~ ~hereof, E~AMPLE 1 !
3~
20g o~ gamma alumina (S.A. 200 m2/g) are t~eated ~ith 15 cc of an alcohol solution containing 0.75 ~ of Dynasil ~ ~0 (solution of ethylene orthosilicate at 40%).
The mixture is allowed to react for two hours at 50 Cs it is then drained off and treated with steam in order to hydrolyse the silanol ~roups. It is dried and calcined at SOO C for 4 hours.
The material obtained in this ~lanne~, containing 1.5% of SiO2, is impregnated with 15 cc oE an aqueous solution con~a ~ing 5.90 g oi lanthanum nitrate.
The imprecnated material i.s then dried and calcined at 500C for 4 hours, A ma~erial is obtained constituted by gamma alurnina stabilised by l,S% of SiO2, and contai.ning 107~ oE La2O3.
This catalyst is fed into a reactor, in ~hich trans butene-2 i.s isomerised by reaction at a temperature of b~70 C9 atmospheric pressure and a weigh~ hour space velocity (I~HSV) of 6h 1, The catalyst is able to produce butene-l with an i.sobutene content of only 140 ppmJ
After thermal treatment for 24 hours at 1000 C, the catalyst has a surEaoe area of 113 m /g, and shows no loss of activi.ty after 40 reaction cycles ~332 hours in total) and 40 regeneration cycles (152 . hours in total).
The regeneration is carried ou~ at a temperature of 54~ C.
~5 Follo~ing the method described in Examp}e 1, a catalyst is prepared constituted by 1~5~o oE SiO2 ~ 2.5% of CaO on gamma alumina.
The calci~ll is impregnated usi.ng an aqueous solution (15 cc) of calcium nitrate (~-40 g)O
- l, -Dryin~ and calcining is again effected at 500 C for 4 hours.
The catalyst is fed into a reactor where trans butene-2 is isoraerised by reaction at a temperature of 470 C, atmospheric pressure and a ~eight hourly space v~locity (WHSV) of 6h The catalyst is able to produce butene-l with an isobutene content of only 150 ppm.
After thermal treatment for 24 hours at 1000 C, the catalyst has a surface area of 183 ra2/g~ and sho~s no loss of activity after 40 reaction cycles (332 hours in total) and 40 regeneration cycles (152 ho~rs n total)~
Regeneration is effected at a temperature of 540 C.
Claims (6)
1. A catalyst based on gamma alumina characterized by satisfying the general formula a A1203. b SiO2. c MeXOY
where MeXOY is the oxide of one or more of the metals of Groups II A
and/or VIII and/or III B and/or lanthanides, and a, b, c are the number of moles of A12O3, SiO2 and MeXOY respectively, b and c being related by the relationship c m.b + B
where B has a value greater than or equal to 0.01, b has a value between 0.020 and 0,250, the ratio (b+c)/a lies between 0.01 and 9.0, and m is a number between 0.7 and 0.1.
where MeXOY is the oxide of one or more of the metals of Groups II A
and/or VIII and/or III B and/or lanthanides, and a, b, c are the number of moles of A12O3, SiO2 and MeXOY respectively, b and c being related by the relationship c m.b + B
where B has a value greater than or equal to 0.01, b has a value between 0.020 and 0,250, the ratio (b+c)/a lies between 0.01 and 9.0, and m is a number between 0.7 and 0.1.
2. A catalyst as claimed in claim 1, wherein MeXOY, is La2O3, and the moles of La2O3 are related to the moles of SiO2 by the relationship moles La2O3 0.257 x moles SiO2 + 0.014 the moles of SiO2 being between 0.020 and 0.250.
3. A catalyst as claimed in claim 1, wherein MeXOY is Fe2O3, and the moles of Fe2O3 are related to the moles of SiO2 by the relationship moles Fe2O3 0.290 x moles SiO2 + 0.018 the moles of SiO2 being between 0.020 and 0.250.
4. A catalyst as claimed in claim 1, wherein MeXOy is CaO, and the moles of CaO are related to the moles of SiO2 by the relationship moles CaO 0.500 x moles SiO2 + 0.030 the moles of SiO2 being between 0.020 and 0.250.
5. A catalyst as claimed in claim 19 wherein MeXOY is BaO, and the moles of BaO are related to the moles of SiO2 by the relationship moles BaO 0.500 x moles SiO2 + 0.020 the moles of SiO2 being between 0.020 and 0.250.
6, A method for preparing a catalyst based on gamma alumina stabilised by silica characterised in that the gamma alumina stabil-ised by silica is impregnated with aqueous solutions of salts of the metals of Groups II A and/or VIII and/or III B and/or lanthanides, to obtain the composition as claimed in claim 1.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT21512A/82 | 1982-05-27 | ||
| IT21512/82A IT1152198B (en) | 1982-05-27 | 1982-05-27 | ALBUMINE RANGE CATALYST AND ITS PREPARATION METHOD |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1193238A true CA1193238A (en) | 1985-09-10 |
Family
ID=11182900
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000428978A Expired CA1193238A (en) | 1982-05-27 | 1983-05-26 | Catalyst based on gamma alumina, and its method of preparation |
Country Status (29)
| Country | Link |
|---|---|
| JP (1) | JPS58216741A (en) |
| KR (1) | KR840004521A (en) |
| AU (1) | AU557471B2 (en) |
| BE (1) | BE896851A (en) |
| CA (1) | CA1193238A (en) |
| CS (1) | CS239938B2 (en) |
| DD (2) | DD228538A5 (en) |
| DE (1) | DE3319099A1 (en) |
| DK (1) | DK234483A (en) |
| EG (1) | EG16047A (en) |
| ES (1) | ES8505833A1 (en) |
| FR (1) | FR2527941A1 (en) |
| GB (1) | GB2121698B (en) |
| GR (1) | GR78565B (en) |
| HU (1) | HU200709B (en) |
| IT (1) | IT1152198B (en) |
| LU (1) | LU84824A1 (en) |
| NL (1) | NL8301873A (en) |
| NO (1) | NO158485C (en) |
| NZ (1) | NZ204199A (en) |
| PH (1) | PH17970A (en) |
| PL (1) | PL140654B1 (en) |
| PT (1) | PT76765B (en) |
| RO (1) | RO86664B (en) |
| SE (1) | SE452954B (en) |
| SU (1) | SU1440330A3 (en) |
| YU (1) | YU44435B (en) |
| ZA (1) | ZA833399B (en) |
| ZW (1) | ZW11383A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10329218B2 (en) | 2015-05-29 | 2019-06-25 | Jxtg Nippon Oil & Energy Corporation | Isomerization catalyst, method for producing straight-chain olefin, and method for producing compound |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61157345A (en) * | 1984-12-28 | 1986-07-17 | Toyo C C I Kk | Carrier for catalyst |
| DE3839580C1 (en) * | 1988-11-24 | 1990-07-05 | Condea Chemie Gmbh, 2212 Brunsbuettel, De | |
| US5187138A (en) * | 1991-09-16 | 1993-02-16 | Exxon Research And Engineering Company | Silica modified hydroisomerization catalyst |
| US5208200A (en) * | 1992-02-27 | 1993-05-04 | Exxon Research And Engineering Co. | Noble metal on rare earth modified silica alumina as hydrocarbon conversion catalyst |
| US5248409A (en) * | 1992-02-27 | 1993-09-28 | Exxon Research & Engineering Company | Metal on rare earth modified silica alumina as hydrocarbon conversion catalyst |
| DE4445680A1 (en) * | 1994-12-21 | 1996-06-27 | Huels Chemische Werke Ag | Catalyst and process for the isomerization of aliphatic C¶4¶-C¶1¶¶¶ monoolefins |
| DE102013226370A1 (en) | 2013-12-18 | 2015-06-18 | Evonik Industries Ag | Production of butadiene by oxidative dehydrogenation of n-butene after prior isomerization |
| DE102015200702A1 (en) | 2015-01-19 | 2016-07-21 | Evonik Degussa Gmbh | Preparation of butadiene from ethene |
| JP6736017B2 (en) * | 2015-11-05 | 2020-08-05 | Ｅｎｅｏｓ株式会社 | Isomerization catalyst, method for producing linear olefin and method for producing compound |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2461069A (en) * | 1944-06-10 | 1949-02-08 | Socony Vacuum Oil Co Inc | Simultaneous catalytic cracking and desulfurization of hydrocarbons |
| US3313858A (en) * | 1965-02-12 | 1967-04-11 | Phillips Petroleum Co | Isomerization of non-terminal olefins |
| US3925253A (en) * | 1973-03-19 | 1975-12-09 | Ethyl Corp | Catalysts |
| US4220559A (en) * | 1978-02-14 | 1980-09-02 | Engelhard Minerals & Chemicals Corporation | High temperature-stable catalyst composition |
| FR2424061A1 (en) * | 1978-04-25 | 1979-11-23 | Lyon Applic Catalytiques | NEW CONTACT MASS FOR HETEROGENOUS CATALYSIS |
| JPS6035174B2 (en) * | 1979-05-10 | 1985-08-13 | 株式会社日本触媒 | Catalyst for producing alkylene glycol ethers |
-
1982
- 1982-05-27 IT IT21512/82A patent/IT1152198B/en active
-
1983
- 1983-05-11 NZ NZ204199A patent/NZ204199A/en unknown
- 1983-05-11 ZA ZA833399A patent/ZA833399B/en unknown
- 1983-05-12 ZW ZW113/83A patent/ZW11383A1/en unknown
- 1983-05-17 GB GB08313562A patent/GB2121698B/en not_active Expired
- 1983-05-17 SE SE8302769A patent/SE452954B/en not_active IP Right Cessation
- 1983-05-17 YU YU1099/83A patent/YU44435B/en unknown
- 1983-05-18 KR KR1019830002174A patent/KR840004521A/en not_active Application Discontinuation
- 1983-05-18 PH PH28927A patent/PH17970A/en unknown
- 1983-05-19 GR GR71394A patent/GR78565B/el unknown
- 1983-05-20 AU AU14835/83A patent/AU557471B2/en not_active Expired - Fee Related
- 1983-05-24 RO RO111050A patent/RO86664B/en unknown
- 1983-05-25 FR FR8308649A patent/FR2527941A1/en not_active Withdrawn
- 1983-05-25 NO NO831848A patent/NO158485C/en unknown
- 1983-05-25 DK DK234483A patent/DK234483A/en not_active Application Discontinuation
- 1983-05-25 EG EG323/83A patent/EG16047A/en active
- 1983-05-25 PL PL1983242188A patent/PL140654B1/en unknown
- 1983-05-26 CS CS833718A patent/CS239938B2/en unknown
- 1983-05-26 CA CA000428978A patent/CA1193238A/en not_active Expired
- 1983-05-26 HU HU831865A patent/HU200709B/en not_active IP Right Cessation
- 1983-05-26 PT PT76765A patent/PT76765B/en unknown
- 1983-05-26 DE DE19833319099 patent/DE3319099A1/en active Granted
- 1983-05-26 BE BE0/210854A patent/BE896851A/en not_active IP Right Cessation
- 1983-05-26 SU SU833597798A patent/SU1440330A3/en active
- 1983-05-26 LU LU84824A patent/LU84824A1/en unknown
- 1983-05-26 NL NL8301873A patent/NL8301873A/en not_active Application Discontinuation
- 1983-05-27 ES ES523075A patent/ES8505833A1/en not_active Expired
- 1983-05-27 DD DD83266938A patent/DD228538A5/en not_active IP Right Cessation
- 1983-05-27 DD DD83251339A patent/DD211720A5/en not_active IP Right Cessation
- 1983-05-27 JP JP58092564A patent/JPS58216741A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10329218B2 (en) | 2015-05-29 | 2019-06-25 | Jxtg Nippon Oil & Energy Corporation | Isomerization catalyst, method for producing straight-chain olefin, and method for producing compound |
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