摘要:
A process for separating the isomers of dichlorobenzene from a feed mixture of the same. Separation of the isomers is effected by selective absorption and desorption and is susceptible to various flow schemes for performing continuous adsorptive separations. The process uses an X-type zeolite adsorbent having a mixture of sodium and potassium ions in the exchangeable cationic sites. The desorbent may be an alkyl benzene, such as toluene, xylene, p-diethylbenzene, etc.
摘要:
The subject invention comprises a novel UZM-14 catalytic material comprising globular aggregates of crystallites having a MOR framework type with a mean crystallite length parallel to the direction of 12-ring channels of about 60 nm or less and a mesopore volume of at least about 0.10 cc/gram. Catalysts formed from the novel material are particularly effective for the transalkylation of aromatics.
摘要翻译:本发明包括一种新型的UZM-14催化材料,其包含具有MOR骨架型晶粒的球形聚集体,其平均微晶长度平行于约60nm或更小的12环通道的方向,中孔体积为至少约0.10 cc /克。 由新型材料形成的催化剂对于芳族化合物的烷基转移特别有效。
摘要:
This invention embodies a catalyst and a process for transalkylation of C7, C9, and C10 aromatics to obtain a high yield of xylenes. The catalyst comprises a novel UZM-14 catalytic material comprising globular aggregates of crystallites having a MOR framework type with a mean crystallite length parallel to the direction of the 12-ring channels of about 60 nm or less and a mesopore volume of at least about 0.10 cc/gram. The UZM-14 catalyst is particularly active and stable in a transalkylation process.
摘要翻译:本发明体现了C7,C9和C10芳族化合物的烷基转移催化剂和方法,以获得高产率的二甲苯。 该催化剂包括新型的UZM-14催化材料,其包含具有MOR骨架类型的晶体的球状聚集体,其平均微晶长度与12-环通道的方向平行约60nm或更小,中孔体积至少约0.10 cc /克。 UZM-14催化剂在烷基转移过程中特别活跃和稳定。
摘要:
An aluminosilicate zeolite and substituted versions designated UZM-15 have been synthesized. These zeolites are prepared using an organoammonium cation as a template in which at least one organic group has at least 2 carbon atoms. An example of such a cation is diethyldimethylammonium cation. The template can optionally comprise other organoammonium cations, alkali metals and alkaline earth metals. These UZM-15 materials can be dealuminated by various processes to provide UZM-15HS compositions. Both the UZM-15 and UZM-15HS compositions are useful as catalysts or catalyst supports in various process such as the conversion of cyclic hydrocarbons to non-cyclic hydrocarbons and olefin oligomerization.
摘要:
A process for the removal of toxic cations and anions from gastrointestinal fluids is disclosed. A pH-increasing medication is administered prior to or together with a microporous cation exchanger. An additional feature of the invention is the use of a proton form of the microporous cation exchanger. The acidity of the gastrointestinal fluids is decreased to improve the stability of the microporous cation exchangers, which are represented by the empirical formula: ApMxZr1-xSinGeyOm (I) or ApMxTi1-xSinGeyOm (II)
摘要:
A process for isomerizing alkyl aromatic hydrocarbons using a catalyst comprising a zeolite and a platinum group metal component is described. The zeolite comprises a new family of zeolites designated UZM-8HS which are derived from UZM-8 zeolites by treating the UZM-8 with a fluoro-silicate salt, an acid, etc. The UZM-8HS zeolites have unique x-ray diffraction patterns.
摘要:
A family of crystalline aluminosilicate zeolites designated UZM-5HS and derived from UZM-5 have been synthesized. The aluminum content of the UZM-5HS is lower than that of the starting UZM-5 thus changing its ion exchange capacity and acidity. These UZM-5HS are represented by the empirical formula: M1an+Al(1−x)ExSiy′Oz″ and are prepared by treatments such as acid extraction and AFS treatments.
摘要:
The present invention is a process for producing phenyl-alkanes at alkylation conditions in the presence of a zeolite having an NES zeolite structure type, such as NU-87. This invention produces phenyl-alkanes having lightly branched aliphatic alkyl groups which are used to produce modified alkylbenzene sulfonates that have improved cleaning effectiveness in hard and/or cold water while also having biodegradability comparable to that of linear alkylbenzene sulfonates.
摘要:
Hydrocarbon conversion processes using a new family of zeolites identified as UZM-8HS are described. The UZM-8HS zeolite are derived from UZM-8 zeolites by treating the UZM-8 with a fluoro-silicate salt, an acid, etc. The UZM-8HS zeolites have unique x-ray diffraction patterns. These zeolites can be used in alkylation of aromatics, transalkylation of aromatics, isomerization of aromatics and alkylation of isoparaffins.
摘要:
Methods of making substantially phase-pure and thermally stable crystalline alumina compositions stabilized with an oxide of silicon, germanium, phosphorus, arsenic or a mixture thereof. Also provided are crystalline alumina compositions and catalyst supports made using these methods.