Disclosed are catalyst compositions including zeolite and silica components, methods of making, and processes of using in the thermo-catalytic conversion of biomass. Such disclosed methods of making include: i) spray drying of the catalyst precursor slurry at a pH below 1, or ii) the removal of ions such as sodium from the binder material prior to spray drying the catalyst precursor slurry at a pH below 2.7, or iii) spray drying the catalyst precursor including a pore regulating agent followed by steam treating, or iv) some combination of i), ii) and iii).

Catalysts for Thermo-Catalytic Conversion of Biomass, and Methods of Making and Using

Preparation method for binary transition metal catalyst for catalyzing hydrolysis of ammonia borane

The invention provides a hybrid molecular sieve catalyst comprising 5 to 30 wt.% of a Y-type molecular sieve, 5 to 30 wt.% of a ZSM-5 type molecular sieve, and the balance of a matrix component and a binder component. The invention also provides a preparation method of the hybrid molecular sieve catalyst, and the method comprises the following steps: mixing the Y-type molecular sieve and the ZSM-5 molecular sieve agent with a matrix material, a binder precursor, a pore forming agent, a dispersing agent and water to prepare aqueous slurry; and performing spray drying and calcining on the slurry. The invention also provides a method for using the catalyst for preparing olefins from methanol. By using the catalyst, significant improvements in C3 and C4 olefin selectivity can be achieved.

Hybrid molecular sieve catalyst and its preparation method and application

The invention discloses a method for preparing propylene glycol monomethyl ether by using propylene, which comprises the following steps that: in the presence of a titanium silicalite molecular sieve composite catalyst, propylene, hydrogen peroxide and lower alcohols are directly subjected to epoxidation and open-loop etherification one-step reaction to obtain the propylene glycol monomethyl ether, and the catalyst consists of a titanium silicalite molecular sieve, an acidic molecular sieve and resin. In the method, the titanium silicalite molecular sieve composite catalyst is adopted to realize the process that the propylene glycol monomethyl ether is directly prepared by the propylene on a fixed bed, the problems that the steps of open-loop etherification two-step reaction of propylene oxide are complicated and the energy consumption is high and the like when the propylene oxide is prepared by the epoxidation of the propylene in the traditional method for preparing the propylene glycol monomethyl ether can be solved, and the reaction efficiency is improved.

Method for preparing propylene glycol monomethyl ether by using propylene

Provided is a mixed molecular sieve catalyst, the catalyst comprising a 5-30 wt.% Y-type molecular sieve, a 5-30 wt.% ZSM-5-type molecular sieve, and the balance being matrix components and binder components. Also provided is a method for preparing the mixed molecular sieve catalyst, the method comprising the following steps: mixing the Y-type molecular sieve and the ZSM-5-type molecular sieve with a matrix material, a binder precursor, a pore-forming agent, a dispersing agent, and water so as to produce aqueous slurry; then spray drying and baking the slurry. Also provided is a method for preparing olefin from methanol by using the catalyst, and significantly improved C3 and C4 olefin selectivity can be achieved through the use of the catalyst of the present invention.

Mixed molecular sieve catalyst and preparation method and use thereof

The invention provides is a combinational zeolite catalyst making alcohol and aether kinds compounds and the preparation method. The zeolites of the invention are the zeolite Y with 2.420-2.462nm parameter and ZSM-5 zeolite through burning and with the organic module agent removed. Mix the two kinds of zeolites and use the mixing agent containing H+ and NH4+ for the treatment and then implement drying treatment. The combinational zeolites are the acid components, and are matched with one or some of P, B and Zn and use Al2O3, SiO2-Al2O3 or the clay to form. The catalyst of the invention has high activity, fine selection and flexible operation.

Huanwen Zhou

Papers

Composite zeolite catalyst for preparing alcohol and ether compounds and preparation thereof

A composite zeolite catalyst for preparing alcohol and ether compounds and a preparation method thereof