Abstract:
The present invention relates to a method for production of cymene comprising the following steps: a) providing a solution comprising cyclic monoterpenes having the formula C 10 H 16 b) addition of a catalyst comprising Fe 3+ and/ or Fe 2+ ions c) addition of sulphur dioxide to the solution d) incubation of the solution mixture from step c) for a reaction time at a reaction temperature such that at least part of the cyclic monoterpenes are converted to cymene such that a solution comprising cymene is obtained.
Abstract:
Process for converting heterosubstituted methanes, such as methyl alcohol, methyl ether, methyl mercaptan, dimethyl sulfide, methyl halides, methylal, methylamine and the like, by contacting such methanes with bifunctional acid-base catalysts at elevated temperatures, between 200 and 450 C, preferably between 250 and 375 C, to produce predominantly lower olefins, preferably ethylene and propylene. The catalysts of preference are those derived from halides, oxyhalides, oxides, sulfides or oxysulfides of transition metals of Groups IV, V, VI, VIII of the Periodic Table, such as tantalum, niobium, zirconium, tungsten, titanium, chromium and the like, deposited on acidic oxides and sulfides such as alumina, silica, zirconia or silica-alumina.
Abstract:
This invention relates to a method of producing an aromatic hydrocarbon compound from byproducts of aromatic carboxylic acid and/or aromatic carboxylic acid alkylester preparation processes using hydroprocessing under conditions of high temperature and high hydrogen pressure in the presence of a catalyst, and to a hydroprocessing catalyst used therein.
Abstract:
This invention concerns a catalyst, particularly for selective production of aromatics from a hydrocarbon stream with straight-chained, branched or cyclic alkyl or alkylene chains, of 6 to 12 carbon atoms. On an oxide of a transition metal of group IVB of the periodic table, such as TiO2 or ZrO2, this catalyst contains at least one element from the VIIIth secondary group, such as palladium, platinum, rhodium, rhenium or tin, and, optionally, a compound of alkali or earth alkali metals, a compound from the third major or secondary group, or zinc, or at least one compound from the sulphur, tellurium, arsenic, antimony or selenium group. The invention also concerns the use of this catalyst for producing aromatics, such as ethyl benzene or xylolene from C6 to C12-hydrocarbons.
Abstract:
This invention relates to a method of producing an aromatic hydrocarbon compound from byproducts of aromatic carboxylic acid and/or aromatic carboxylic acid alkylester preparation processes using hydroprocessing under conditions of high temperature and high hydrogen pressure in the presence of a catalyst, and to a hydroprocessing catalyst used therein.
Abstract:
In a process for dealkylating a poly-alkylated aromatic compound, a feed comprising at least one poly-alkylated aromatic compound selected from polypropylbenzene, polybutylbenzene, and polycyclohexylbenzene is introduced into a reaction zone. The feed is then contacted in the reaction zone with an acid catalyst under conditions effective to dealkylate at least a portion of the poly-alkylated aromatic compound and produce a first reaction product comprising at least one mono-alkylated aromatic compound.
Abstract:
A catalyst, a process for making the catalyst and a process for using the catalyst in aromatization of alkanes to aromatics, specifically, aromatization of alkanes having two to six carbon atoms per molecule, such as propane, to aromatics, such as benzene, toluene and xylene. The catalyst is an aluminum-silicongermanium zeolite on which platinum has been deposited. Germanium is in the framework of the crystalline zeolite. Platinum is deposited on the zeolite. The catalyst may be supported on magnesia, alumina, titania, zirconia, thoria, silica, boria or mixtures thereof. The catalyst may contain a sulfur compound on the surface of the catalyst. The sulfur compound may be added to the catalyst in a pretreatment process or introduced with the hydrocarbon feed to contact the catalyst during the aromatization process. Generally, the catalyst may be of the formula M [ (Si02) (X02) x (YO2) Y] Z y/n where M is a noble metal such as platinum or gold, X is titanium, germanium, tin or another tetravalent element, Y is boron, aluminum, gallium, indium, tellurium or another trivalent element, Z is a cation with a valence of n such as H , Na , K , Rb , Cs , Ca , Mg , Sr or Ba , x varies from 0-0.15 and y is 0-0.125. An example catalyst would be represented as H Pt I [Si 91Ge4Al10192] -MFI.
Abstract translation:催化剂,制备催化剂的方法和使用该催化剂将烷烃芳构化成芳族化合物,特别是每分子具有2-6个碳原子的烷烃例如丙烷芳构化成芳族化合物例如苯,甲苯和 二甲苯。 该催化剂是铂沉积在其上的铝 - 硅锗沸石。 锗是在结晶沸石的框架内。 铂被沉积在沸石上。 催化剂可负载在氧化镁,氧化铝,二氧化钛,氧化锆,氧化钍,二氧化硅,氧化硼或其混合物上。 催化剂可以在催化剂的表面上含有硫化合物。 硫化合物可以在预处理过程中加入到催化剂中或者在芳构化过程中与烃进料一起引入以接触催化剂。 通常,催化剂可以具有式M [(SiO 2)(XO 2)x(YO 2)Y] Z + y / n其中M是贵金属例如铂或金,X是钛,锗,锡或 另一种四价元素,Y是硼,铝,镓,铟,碲或另一种三价元素,Z是具有n价的阳离子,如H +,Na +,K +,Rb + ,Cs +,Ca 2+,Mg 2+,Sr 2+或Ba 2+,x在0-0.15之间变化,y为0-0.125。 示例催化剂将表示为H + Pt I [Si 91 Ge 4 Al 10 19 2] -MFI。
Abstract:
A catalyst, a process for making the catalyst and a process for using the catalyst in aromatization of alkanes to aromatics, specifically, aromatization of alkanes having two to six carbon atoms per molecule, such as propane, to aromatics, such as benzene, toluene and xylene. The catalyst is an aluminum-silicongermanium zeolite on which platinum has been deposited. Germanium is in the framework of the crystalline zeolite. Platinum is deposited on the zeolite. The catalyst may be supported on magnesia, alumina, titania, zirconia, thoria, silica, boria or mixtures thereof. The catalyst may contain a sulfur compound on the surface of the catalyst. The sulfur compound may be added to the catalyst in a pretreatment process or introduced with the hydrocarbon feed to contact the catalyst during the aromatization process. Generally, the catalyst may be of the formula M [ (Si0 2 ) (X0 2 ) x (YO 2 ) Y ] Z + y/n where M is a noble metal such as platinum or gold, X is titanium, germanium, tin or another tetravalent element, Y is boron, aluminum, gallium, indium, tellurium or another trivalent element, Z is a cation with a valence of n such as H + , Na + , K + , Rb + , Cs + , Ca 2+ , Mg 2+ , Sr 2+ or Ba 2+ , x varies from 0-0.15 and y is 0-0.125. An example catalyst would be represented as H + Pt I [Si 91 Ge 4 Al 1 0 192 ] -MFI.
Abstract translation:催化剂,制备催化剂的方法和使用该催化剂将烷烃芳构化成芳族化合物的方法,具体地说,将每分子如丙烷具有2-6个碳原子的烷烃芳构化成芳族化合物如苯,甲苯和 二甲苯。 该催化剂是沉积铂的铝硅硅沸石。 锗在结晶沸石的框架内。 铂沉积在沸石上。 催化剂可以负载在氧化镁,氧化铝,二氧化钛,氧化锆,氧化钍,二氧化硅,氧化硼或其混合物上。 催化剂可以在催化剂的表面上含有硫化合物。 可以在预处理过程中将硫化合物加入到催化剂中,或者在芳烃化过程中与烃进料一起引入以与催化剂接触。 通常,催化剂可以具有式M [(SiO 2)(XO 2)x(YO 2)Y] Z + y / n,其中M是贵金属如铂或金,X是钛,锗,锡或 另一个四价元素Y是硼,铝,镓,铟,碲或另一个三价元素,Z是n价的阳离子,如H +,Na +,K +,Rb + ,Cs +,Ca 2+,Mg 2+,Sr 2+或Ba 2+,x从0-0.15变化,y为0-0.125。 示例性催化剂将表示为H + Pt I [Si 91 Ge 4 Al 10 19 2] -MFI。
Abstract:
The present disclosures and inventions relate to a catalyst composition for the selective conversion of a hydrogen/carbon monoxide mixture (syngas) to C1-C5 hydrocarbons, wherein the catalyst composition, which can be optionally dispersed on a support material, has the formula COaMObScMdOf, wherein a is 1; wherein b is from 0.8 to 1.2; wherein c is from 1 to 2; wherein M comprises Zn, Ti, Zr, or Ni, or a mixture thereof, wherein d is from 0.000001 to 0.2; and wherein f is a number determined by the valence requirements of the other elements present in the catalyst.