摘要:
This invention relates to a catalyst support structure, methods of preparing the support structure and a process for using the support structure. The catalyst support structure is composed of a substantially polycrystalline cordierite phase having a chemical composition by weight of 6-15% MgO, 33-40% Al.sub.2 O.sub.3 and 45-56% SiO.sub.2 and characterized in that it has a surface area of at least 2.7 m.sup.2 /g and preferably 8 m.sup.2 /g, a compressive strength of at least 31 MPa, a thermal expansion coefficient smaller than 5.2.times.10.sup.-6 m/m/.degree.C. and a porosity of at least 20%.
摘要翻译:本发明涉及催化剂载体结构,制备载体结构的方法和使用该载体结构的方法。 催化剂载体结构由具有6-15%MgO,33-40%Al 2 O 3和45-56%SiO 2重量的化学组成的基本上多晶的堇青石相组成,其特征在于其表面积至少为2.7m 2 / g,优选为8m 2 / g,抗压强度为至少31MPa,热膨胀系数小于5.2×10 -6 m / m /℃,孔隙率为至少20%。
摘要:
This invention relates to hydrocarbon conversion processes using a catalytic composite which is an amorphous solid solution of phosphorus, silicon and aluminum oxides. The composite is characterized in that it contains from about 5 to about 50 weight percent Al.sub.2 O.sub.3, from about 10 to about 90 weight percent SiO.sub.2 and from about 5 to about 40 weight percent P.sub.2 O.sub.5 and has pores whose average diameters range from about 30 to about 200 Angstroms. The composite is further characterized in that it has a pore volume of about 0.35 to about 0.75 cc/g and a surface area of about 200 to about 420 m.sup.2 /g. The composite may be prepared by forming a mixture of sols of alumina and silica and a phosphorus compound, gelling the mixture to form particles and then calcining the particles to provide the amorphous solid solution. The amorphous composite may be used either as is or with additional catalytic metals (selected from the metals of Group VIB and VIII of the Periodic Table) dispersed thereon.
摘要翻译:本发明涉及使用磷,硅和氧化铝的无定形固溶体的催化复合材料的烃转化方法。 该复合材料的特征在于其包含约5至约50重量%的Al 2 O 3,约10至约90重量%的SiO 2和约5至约40重量%的P 2 O 5,并且具有孔,其平均直径范围为约30至约200 埃 该复合材料的特征还在于其具有约0.35至约0.75cc / g的孔体积和约200至约420m 2 / g的表面积。 可以通过形成氧化铝和二氧化硅的溶胶与磷化合物的混合物来制备复合材料,将混合物胶化形成颗粒,然后煅烧颗粒以提供无定形固溶体。 无定形复合材料可以原样使用或与其分散的其它催化金属(选自元素周期表第VIB族和第VIII族的金属)一起使用。
摘要:
This invention relates to a catalytic composite which is an amorphous solid solution of phosphorus, silicon and aluminum oxides. The composite is characterized in that it contains from about 5 to about 50 weight percent Al.sub.2 O.sub.3, from about 10 to about 90 weight percent SiO.sub.2 and from about 5 to about 40 weight percent P.sub.2 O.sub.5 and has pores whose average diameters range from about 30 to about 200 Angstroms. The composite is further characterized in that it has a pore volume of about 0.35 to about 0.75 cc/g and a surface area of about 200 to about 420 m.sup.2 /g. The composite may be prepared by forming a mixture of sols of alumina and silica and a phosphorus compound, gelling the mixture to form particles and then calcining the particles to provide the amorphous solid solution. The amorphous composite may be used either as is or with additional catalytic metals (selected from the metals of Group VIB and VIII of the Periodic Table) dispersed thereon to catalyze various hydrocarbon conversion processes such as hydrocracking and alkylation.
摘要翻译:本发明涉及一种磷,硅和氧化铝的无定形固溶体催化复合材料。 该复合材料的特征在于其包含约5至约50重量%的Al 2 O 3,约10至约90重量%的SiO 2和约5至约40重量%的P 2 O 5,并且具有孔,其平均直径范围为约30至约200 埃 该复合材料的特征还在于其具有约0.35至约0.75cc / g的孔体积和约200至约420m 2 / g的表面积。 可以通过形成氧化铝和二氧化硅的溶胶与磷化合物的混合物来制备复合材料,将混合物胶化形成颗粒,然后煅烧颗粒以提供无定形固溶体。 无定形复合材料可以原样使用或与另外的分散在其上的催化金属(选自元素周期表VIB和VIII族的金属)一起使用以催化各种烃转化过程如加氢裂化和烷基化。
摘要:
Superior tolerance to catalyst coking is obtained with a catalytic composite comprising a gallium component and a crystalline aluminosilicate incorporated with a phorphorus containing alumina. A five-fold reduction in the coke content of the spent catalyst of the instant invention is observed which is directly attributable to the phosphorus containing alumina. A novel method of preparing this catalyst is presented, along with a novel process for the dehydrocyclodimerization of C.sub.2 -C.sub.5 aliphatic hydrocarbons.
摘要:
A novel solid phosphoric acid catalyst composition is disclosed. The composite comprises solid phosphoric acid and a refractory oxide binder. The composite is characterized in that 25.0 volume percent or less of the total catalyst pore volume consists of pores having a diameter of 10,000 .ANG. or greater. An improvement in catalyst activity and stability is observed when such a catalyst is utilized in a hydrocarbon conversion process.
摘要:
An extrusion die for producing multichanneled structures from an extrudable material. The die is composed of a series of pins that correspond to the shape of the channels in the structure. At one end of the pins, the area between the pins is open to define a discharge zone having the shape of the structure. At their opposite ends, the pins are connected about adjacent corners by a series of webs. Slots bordered by the pins and the webs define a series of feed passages that communicate with the discharge zone at areas of reduced width between adjacent pins.
摘要:
A new catalyst composition for converting hydrocarbons is disclosed. Also disclosed is a method for making the catalyst. The catalyst comprises a platinum group component and a phosphorous component with a porous support material. The catalyst is made by compositing a platinum group component with a porous support material and then contacting that composite with phosphorus or a compound of phosphorus. In a preferred embodiment of the invention a catalyst comprising platinum, phosphorus and chlorine with alumina is utilized in the catalytic reforming of hydrocarbons boiling in the gasoline range to produce a high octane reformate suitable for gasoline blending or a high aromatics content reformate suitable as a petrochemical feedstock.
摘要:
The present invention relates to a method of preparing an alumina hydrosol from an aluminum sulfate solution. The subject method comprises the steps of admixing a stoichiometric amount of a metal selected from the group consisting of calcium, strontium and/or barium in the form of a mixture of a hydrated chloride metal salt and a metal hydroxide with an aqueous aluminum sulfate solution, filtering the resulting metal sulfate precipitate from the above admixture, recovering a substantially sulfur-free aluminum-containing filtrate solution, admixing aluminum metal with the filtrate solution, and digesting the aluminum metal at digestion conditions with the filtrate solution to form an alumina hydrosol possessing the desired Al:Cl weight ratio.
摘要:
A novel solid phosphoric acid catalyst composition, and process for using the catalyst is disclosed. The composite comprises solid phosphoric acid and a refractory oxide binder. The composite is characterized in that 25.0 volume percent or less of the total catalyst pore volume consists of pores having a diameter of 10,000 .ANG. or greater. An improvement in catalyst stability is observed when such a catalyst is utilized in a hydrocarbon conversion process.
摘要:
A honeycombed structure is extruded and wash coat applied to the interior channels of the structure before the honeycomb structure is separated from the die in which it is formed. This method produces the honeycombed structure using a die that includes a die body having an inlet and an outlet side, a plurality of parallel pins defined by the body that correspond to the shape of the channels in the honeycombed structure, and a discharge zone that communicates directly with the outlet side of the die and is defined by the open area between the pins. The extrudable material enters the discharge zone from a series of feed passages defined by the pins and a plurality of webs that interconnect the pins. Each pin has an interior duct with an opening at the end of each pin. A series of internal passages in the die body receive fluid from one or more ports on the periphery of the die and distribute the fluid to the ducts. Spraying the wash coat from the ends of the pins eliminates the need for a separate wash coat step after the honeycombed structure has been formed. In addition, wash coat is continually applied to the interior walls of the channel by the duct as the channel passes the end of the pin so that the entire length of the channel is covered with wash coat. This invention can be used in a wide variety of die configurations, but is especially suited for a die having segmented slots for feed passages and square channel forming pins defined in part by the segmented slots.