59results about How to "Low pore volume" patented technology

Disclosed are silica bound zeolite adsorbent particles which possess high volumetric gas adsorption capacity for the adsorption and / or desorption of gases. The adsorbent are highly effective as a gas source in volumetrically constrained applications. The silica-bound zeolite adsorbents possess a relatively high zeolite content simultaneously with a relatively low intra-particle pore volume as compared to the clay bound zeolite aggregates heretofore used as a gas source in volumetrically constrained environments, e.g. instant beverage carbonation processes, devices or systems.

The invention relates to an ordered mesoporous organic silicon oxide hollow ball prepared through a one-step method and a preparation method of the ordered mesoporous organic silicon oxide hollow ball. The prepared ordered mesoporous organic silicon oxide hollow ball has good spherical morphology. The ball grain size ranges from 50 nm to 100 nm. The ball grain size distribution is uniform. The ordered mesoporous organic silicon oxide hollow ball is high in monodispersity, strength and dispersibility. A spherical shell comprises ordered radial mesoporous ducts. The preparation method is simple and easy to implement and can be easily conducted in an industrial mode. The ordered mesoporous organic silicon oxide hollow ball can be prepared through one step without sacrificial template or postprocessing. The fastest preparation process lasts for only 0.25 h. By means of the structure, reaction molecules or medicine molecules can conveniently enter and leave the ordered mesoporous organic silicon oxide hollow ball, and the ordered mesoporous organic silicon oxide hollow ball has good application prospects in the fields of medicine slow release, release control, medical imaging, catalysis and the like.

The invention discloses a hydrocracking catalyst and a preparation method thereof. The preparation method comprises the following steps: 1, dipping aluminum hydroxide xerogel powder used in a carrier in a solution containing a hydrogenation metal component; 2, drying the powder; and 3, fully rolling, molding and roasting the powder together with molecular sieve under the action of a peptizer or a binder to obtain the catalyst. The catalyst of the invention is obtained only through one-time high temperature roasting, so the preparation method is simple, and the preparation cost is obviously reduced. In addition, the hydrogenation center and the cracking center of the catalyst of the invention coordinate and cooperate with each other, so the catalyst has a high catalytic activity, and the catalyst which simultaneously has a large specific surface area and a large pore volume is suitable for processing catalytic process for the high productivity of naphtha by hydrocracking high-dry-point low-quality reduced pressure distillate oil.

The invention relates to a preparation method for a catalyst to hydrotreat hydrocarbons, which comprises gama- Al2O3 as carrier, metal from VIB group and VIII group as active constituents, and Ti as active adjuvant. The prepraration method comprises: adding titanate solution to bring said Ti during the gelatinization for preparing aluminum hydroxide; adding basic solution contained Mo or W into the dried aluminum hydroxide powder, mixing till the powder wet fully by solution; adding acid solution contained Co or Ni, mixing till plastic, extruding to form, drying, baking, and obtaining the catalyst. This invention improves the catalyst property obviously.