| Patent Number |
Title Of Patent |
Date Issued |
| 6440886 |
Zeolite beta and its use in aromatic alkylation |
August 27, 2002 |
| There is disclosed a new form of zeolite beta which shows substantially greater stability and greater catalyst lifetime when used in the alkylation and transalkylation of aromatic compounds. The new, surface-modified zeolite beta is characterized by having surface aluminum 2p binding |
| 6162416 |
Zeolite beta and its use in aromatic alkylation |
December 19, 2000 |
| There is disclosed a new form of zeolite beta which shows substantially greater stability and greater catalyst lifetime when used in the alkylation and transalkylation of aromatic compounds. The new, surface-modified zeolite beta is characterized by having surface aluminum 2p binding |
| 6153806 |
Minimizing diphenylethane formation in alkylation of benzene by ethylene catalyzed by zeolite be |
November 28, 2000 |
| Reduction of the amount of 1,1-diphenylethane and heavier polyalkylated benzenes produced in the formation of ethylbenzene by alkylation of benzene with ethylene can be effected by reducing the number of hydride transfer active sites on a zeolite beta. One way of producing this "site |
| 5980859 |
Modified zeolite beta processes for preparation |
November 9, 1999 |
| This invention relates to a novel zeolite which has the crystal structure of zeolite beta. The novel zeolite SN-beta has a unique infrared absorbance spectrum, shows enhanced activity for transalkylation of di-isopropyl-benzene and shows less deactivation for cumene synthesis. The ze |
| 5962759 |
Minimizing diphenylethane formation in alkylation of benzene by ethylene catalyzed by zeolite be |
October 5, 1999 |
| Reduction of the amount of 1,1-diphenylethane and heavier polyalkylated benzenes produced in the formation of ethylbenzene by alkylation of benzene with ethylene can be effected by treating a non-templated zeolite beta at thermal oxidation conditions. The precursor zeolite beta contains |
| 5942650 |
Process for the removal of nitrogen compounds from an aromatic stream |
August 24, 1999 |
| This invention relates to a catalytic reaction of an aromatic stream wherein a guard bed for the removal of nitrogen compounds from the aromatic hydrocarbon stream comprising the nitrogen compounds is provided to contact the hydrocarbon stream with a selective adsorbent having an ave |
| 5744686 |
Process for the removal of nitrogen compounds from an aromatic hydrocarbon stream |
April 28, 1998 |
| This invention relates to a process for the removal of nitrogen compounds from an aromatic hydrocarbon stream comprising the nitrogen compounds by contacting the hydrocarbon stream with a selective adsorbent having an average pore size less than. about 5.5 Angstroms. The selective adsorb |
| 5723710 |
Zeolite beta and its use in aromatic alkylation |
March 3, 1998 |
| There is disclosed a new form of zeolite beta which shows substantially greater stability and greater catalyst lifetime when used in the alkylation and transalkylation of aromatic compounds. The new, surface-modified zeolite beta is characterized by having surface aluminum 2p binding |
| 5522984 |
Modified zeolite beta, processes for preparation and use thereof |
June 4, 1996 |
| This invention relates to a novel zeolite which has the crystal structure of zeolite beta. The novel zeolite SN-beta has a unique infrared absorbance spectrum, shows enhanced activity for transalkylation of di-isopropyl-benzene and shows less deactivation for cumene synthesis. The ze |
| 5367101 |
Pentene isomerization process |
November 22, 1994 |
| An improved process is disclosed for the isomerization of pentenes in the absence of hydrogen using a catalyst comprising a non-zeolitic molecular sieve. It is of particular interest to increase the proportion of olefins containing tertiary carbons in the product with low formation of |
| 5336831 |
Olefin isomerization process |
August 9, 1994 |
| An improved process is disclosed for the isomerization of butenes and/or pentenes using a catalyst comprising a non-zeolitic molecular sieve. It is of particular interest to increase the proportion of olefins containing tertiary carbons in the product with low formation of undesirable |
| 5276236 |
Discrete molecular sieve and use |
January 4, 1994 |
| This invention presents a novel MgAPSO molecular sieve, containing a critical range of magnesium in the sieve framework, which is particularly active for hydrocarbon conversion. The sieve advantageously is incorporated, along with a platinum-group metal, into a catalyst formulation w |
| 5191146 |
Olefin isomerization process |
March 2, 1993 |
| An improved process is disclosed for the isomerization of butenes, pentenes, and heavier olefins using a catalyst comprising a non-zeolitic molecular sieve. It is of particular interest to increase the proportion of olefins containing tertiary carbons in the product with low formation |
| 5157178 |
Process for producing oxygenated gasoline |
October 20, 1992 |
| An improved process combination is disclosed for the production of an oxygenated gasoline component from an FCC gasoline feed. Olefins in the cracked gasoline are isomerized using a medium-pore molecular-sieve catalyst to achieve high yields of C.sub.5 + isomerized gasoline and avoid |
| 5146035 |
Butene isomerization process |
September 8, 1992 |
| An improved process is disclosed for the isomerization of butenes, using a catalyst comprising a non-zeolitic molecular sieve to increase the proportion of isobutene or of 1-butene in the product with low formation of undesirable by-products. |
