180results about How to "Increased internal surface area" patented technology

A homogeneous ceria-based mixed-metal oxide, useful as a catalyst support, a co-catalyst and / or a getter has a relatively large surface area per weight, typically exceeding 150 m<2> / g, a structure of nanocrystallites having diameters of less than 4 nm, and including pores larger than the nanocrystallites and having diameters in the range of 4 to about 9 nm. The ratio of pore volumes, VP, to skeletal structure volumes, VS, is typically less than about 2.5, and the surface area per unit volume of the oxide material is greater than 320 m<2> / cm<3>, for low internal mass transfer resistance and large effective surface area for reaction activity. The mixed metal oxide is ceria-based, includes Zr and or Hf, and is made by a novel co-precipitation process. A highly dispersed catalyst metal, typically a noble metal such as Pt, may be loaded on to the mixed metal oxide support from a catalyst metal-containing solution following a selected acid surface treatment of the oxide support. Appropriate ratioing of the Ce and other metal constituents of the oxide support contribute to it retaining in a cubic phase and enhancing catalytic performance. Rhenium is preferably further loaded on to the mixed-metal oxide support and passivated, to increase the activity of the catalyst. The metal-loaded mixed-metal oxide catalyst is applied particularly in water gas shift reactions as associated with fuel processing systems, as for fuel cells.

A durable catalyst support / catalyst is capable of extended water gas shift operation under conditions of high temperature, pressure, and sulfur levels. The support is a homogeneous, nanocrystalline, mixed metal oxide of at least three metals, the first being cerium, the second being Zr, and / or Hf, and the third importantly being Ti, the three metals comprising at least 80% of the metal constituents of the mixed metal oxide and the Ti being present in a range of 5% to 45% by metals-only atomic percent of the mixed metal oxide. The mixed metal oxide has an average crystallite size less than 6 nm and forms a skeletal structure with pores whose diameters are in the range of 4-9 nm and normally greater than the average crystallite size. The surface area of the skeletal structure per volume of the material of the structure is greater than about 240 m2 / cm3. The method of making and use are also described.

Methods, apparatus and assemblies for enhancing heat transfer in electronic components using a flexible thermal pillow. The flexible thermal pillow has a thermally conductive material sealed between top and bottom conductive layers, with the bottom layer having a flexible reservoir residing on opposing sides of a central portion of the pillow that has a gap. The pillow may have roughened internal surfaces to increase an internal surface area within the pillow for enhanced heat dissipation. In an electronic assembly, the central portion of the pillow resides between a heat sink and heat-generating component for the thermal coupling there-between. During thermal cycling, the flexible reservoir of the pillow expands to retain thermally conductive material extruded from the gap, and then contracts to force such extruded material back into the gap. An external pressure source may contact the pillow for further forcing the extruded thermally conductive material back into the gap.

There is described a surface mountable delivery device which has a multi layer construction comprising a liquid permeable support layer adjacent to a porous reservoir layer, the porous reservoir layer being provided with a backing layer. The surface mountable delivery device may comprise of stickers, tapes, pads, tubes, socks, etc.

The invention belongs to the field of a fertilizer, in particular to a potassium humate compound fertilizer and a preparation method thereof. The potassium humate compound fertilizer is prepared by mixing urea, potassium humate, monoammonium phosphate, ammonium chloride, calcium powder and bentonite with magnesium sulfate, zinc sulfate and medium / trace elements. The potassium humate compound fertilizer granulated by using a steam drum physical agglomeration method and the preparation method of the compound fertilizer have the advantages that the prepared potassium humate compound fertilizer has large particle size and high strength and does not agglomerate; the capabilities of water and fertility retention, heat preservation and ventilation of the soil are enhanced; the soil structure is improved; the soil fertility is increased; the problems of reduced soil fertility, environmental pollution, soil hardening, nutrition unbalance and stress resistance of crops are solved; the utilization rate of the fertilizer is improved; the defects of low fertilizer efficiency, insufficient nutrition utilization, overproof pesticide residue, severe nitrate accumulation and heavy metal pollution are overcome; the sustained-release effect against pesticide is realized; the agroecological environment is protected; and the efficiency, yield and crop quality are improved.

The invention relates to a planting soil water retaining agent for slope greening ecological restoration and a preparation method thereof. The water retaining agent is environmentally friendly, free of toxicity, wide in raw material source, low in cost, simple and feasible in process, capable of reducing soil moisture loss significantly, high in storage and water retention capacity, good in salt absorption effect, excellent in degradation performance and free of pollution. Zeolite has increased internal surface area, strong adsorption and enhanced colloidal property after subject to acidification, and can effectively adsorb heavy metals and radioactive wastes in the soil; guar gum is alkalized to facilitate subsequent cross-linking reaction; humic acid can improve the fertility of the soiland promote the growth of plants on the soil to achieve the effect of ecological restoration and greening; the sodium carbonate not only acts as a porogen to improve the porous structure of a copolymer, but also increases the pH of a system and increases sodium ions in the system, and the polymerization and graft ratio between the humic acid and acrylic acid, acrylamide, vegetable fiber and starch is increased.

The invention provides a bone repairing material and a preparation method thereof. The bone repairing material is of a porous structure and the bone repairing material comprises strontium, hydroxyapatite, beta-tricalcium phosphate and collagen. The porous structure is good for proliferation and differentiation of bone cells. Meanwhile, the bone repairing material comprises the hydroxyapatite and the beta-tricalcium phosphate, and the disadvantages that the hydroxyapatite is too stable and the beta-tricalcium phosphate is too rapidly degraded are overcome; and the degradation speed of the material is balanced and is matched with a human skeleton repairing speed very well. The collagen can be used for promoting cell migration, adhesion and differentiation and adjusting cell growth. The strontium can be used for enhancing the activity of osteoblasts and inhibiting the activity of osteoclasts. To sum up, the bone repairing material provided by the invention has various advantages and can be matched with the human skeleton repairing speed, and the bone repairing requirements of human bone defects are met.

The invention discloses an adsorbent for mycotoxin in a feed and a preparation method thereof, aiming at providing an aluminosilicate adsorbent for adsorbing mycotoxin in a mouldy animal feed. The adsorbent is prepared by using medical stone powder as a raw material, immersing the medical stone powder in a certain ratio of antibacterial material quaternary ammonium salt-myristyl trimethyl ammonium bromide, stirring, washing, filtering, drying, and grinding into powder. According to the invention, the processed modified medical stone powder has an increased internal surface area and an enhanced adsorption capacity; by adding the modified medical stone powder in the feed, the animal immunity function and production performance can be raised, and the toxic action of mycotoxin in the feed to animals can be alleviated.

The invention provides a buffering shock-absorbing floor tile and a manufacturing method thereof. A polyurethane buffering layer is arranged on the surface of the floor tile, the floor tile is prepared from a main material, a drilling agent, an additive, reinforcing powder and aluminum fiber filaments through burning, the polyurethane buffering layer is formed by mixing a component A and a component B, the component A is prepared by mixing polyoxypropylene, toluene diisocynate and diphenyl-methane-diisocyanate, and the component B is prepared from polyoxypropylene, epoxy resin, silica sol and modified filler. The polyurethane buffering layer is arranged on the surface of the floor tile and has a protective function compared with a wood floor, the manufacturing price is low, the floor tile of the special structure can absorb and reduce vibration and noise generated by motions, and indoor noise pollution is reduced.

An Infra-Red suppression device composed of systems designed to alter the infra-red spectrum bands produced by the exhaust plume and airframe friction in order to render infra-red seekers, both active and passive, and infra-red homing missiles ineffective, therefore substantially increasing air-craft and crew survivability, and the BET or battle extension time.