The present invention relate to a binderless molecular sieve catalyst and a process for preparing the same, which are mainly useful for solving the problems of the current catalysts, such as lower activity, less pore volume and worse diffusivity. The present invention relates to a novel binderless molecular sieve catalyst, comprising, based on the weight of the catalyst, 90-100 wt. % of a molecular sieve, 0-10 wt. % of a binder, and 0-10 wt. % of an anti-wear agent, wherein said catalyst has a pore volume of 0.1-0.5 ml/g, an average pore diameter of 50-100 nm, and a porosity of 20-40%; the anti-wear agent is selected from the rod or needle-like inorganic materials having a length/diameter ratio of 2-20. Said catalyst has the advantages of higher activity, greater pore volume, larger average pore diameter and porosity, and better diffusivity, and well solves said problems and can be used for the industrial preparation of binderless molecular sieve catalysts.

A catalyst for the dehydroaromatization of lower alkanes comprising boron in an amount of less than 1 wt % is supported on an inorganic support. The catalyst is useful in the production of aromatics from lower alkanes.

The present invention relates to a method for producing renewable aviation fuel D or components thereto from renewable feedstock A comprising separate hydrodeoxygenation (20) hydroisomerization step (40), wherein the hydroisomerization is catalysed by metal impregnated hierarchical zeolite catalyst.

A process for the isomerization of a para-xylene depleted, meta-xylene rich stream under at least partially liquid phase conditions using ZSM-23 with an external surface area of at least 75 m.sup.2/g (indicating a small crystallite size), and a SiO.sub.2/Al.sub.2O.sub.3 ratio between 15 and 75 that produces a higher than equilibrium amount of para-xylene, i.e., more than about 24 wt % of para-xylene, based on the total amount of xylenes.

A process for the isomerization of a para-xylene depleted, meta-xylene rich stream under at least partially liquid phase conditions using ZSM-23 with an external surface area of at least 75 m.sup.2/g (indicating a small crystallite size), and a SiO.sub.2/Al.sub.2O.sub.3 ratio between 15 and 75 that produces a higher than equilibrium amount of para-xylene, i.e., more than about 24 wt % of para-xylene, based on the total amount of xylenes.

A new crystalline molecular sieve designated SSZ-95 is disclosed. In general, SSZ-95 is synthesized from a reaction mixture suitable for synthesizing MTT-type molecular sieves and maintaining the mixture under crystallization conditions sufficient to form product. The product molecular sieve is subjected to a pre-calcination step, and ion-exchange to remove extra-framework cations, and a post-calcination step. The molecular sieve has a MTT-type framework and a H-D exchangeable acid site density of 0 to 50% relative to molecular sieve SSZ-32.

Processes and systems for converting an oxygenate feedstock to a hydrocarbon product, selectivated catalysts and processes for reducing off-spec gasoline production during start-up are provided herein.

The present invention provides a modified composite molecular sieve, and a preparation method and an application of the modified composite molecular sieve. The modified composite molecular sieve comprises SiO.sub.2 and a composite molecular sieve that comprises molecular sieve MCM-22 and zeolite A selected from at least one of ZSM-22, ZSM-23 and ZSM-48, wherein, the molecular sieve MCM-22 covers around the zeolite A. The present invention further provides a catalyst and an application of the catalyst. The catalyst comprises a carrier and a noble metal loaded on the carrier, wherein, the carrier comprises a modified composite molecular sieve that is the modified composite molecular sieve provided in the present invention or the modified composite molecular sieve obtained with the method provided in the present invention. The catalyst that utilizes the composite molecular sieve as a carrier not only can decrease the solidifying point of waxy raw oil, but also can improve the yield of liquid product, is especially applicable to the isomerization dewaxing process of lube distillate, and has an advantage of remarkably improving the viscosity index of lube base oil.

An olefinic composition has a moderate concentration of Type 2 C.sub.8 olefins. The oligomerate composition has hydrocarbon molecules with minimal branching which make excellent diesel and can also be readily cracked to propylene. Consequently, oligomerate product can be sent to the diesel pool or fed or recycled to an FCC unit to increase production of propylene.

The present invention relates to a method for producing renewable C3-C8 hydrocarbons D from renewable feedstock A, in particular to methods comprising separate hydrodeoxygenation (20) hydrocracking (40) steps, wherein the hydrocracking is performed using metal impregnated mesoporous molecular sieves embedded with ZSM-23 zeolite or Beta zeolite as catalyst.