187results about How to "Good renewability" patented technology

The invention relates to an olefin two-phase hydroformylation method, which consists of three parts: polyether guanidine mesylate ionic liquid (PGMILs) with room temperature solidifiable characteristics, complex catalysts (Rh-TPPTS) formed by RhCl3.3H2O or dicarbonylacetylacetonato rhodium and triphenylphosphine sodium trithionate (TPPTS), and reactants of C6-C14 straight chain 1-olefin, wherein the Rh-TPPTS is dissolved in the PGMILs to form a lower layer catalyst phase, the C6-C14 straight chain 1-olefin or product aldehyde forms an upper layer organic phase, the selectivity of high-carbon aldehyde is 85 to 99 percent, the mol ratio of normal aldehyde to isomerism aldehyde is 2.0 to 2.4, the PGMILs phase containing Rh-TPPTS can be cyclically used for 35 times, the activity and the selectivity are unchanged, the accumulated conversion number (TON) reaches higher than 30000, rhodium flowing to the product phase is 0.04 percent to 0.07 percent, and ultra-long-period catalysis activity and selectivity can be realized.

A method is provided for distributing multimedia content in an electronic media distribution system. The method includes the steps of: (a) providing active hidden data, where the active hidden data includes a plurality of executable machine instructions; (b) embedding active hidden data into the host data stream, thereby forming an embedded data stream; (c) transmitting the embedded data stream from a content provider device to a player device; (d) extracting the active hidden data from the embedded data stream on the player device; and (e) executing the active hidden data on the player device.

High performance, low pollution and regenerated metal coordinative cross linked acrylonitrile-butadiene rubber comprises acrylic nitrile 18 - 50wt%, acrylonitrile-butadiene rubber with Mooney viscosity of 20 - 100, liquid butyronitrile, carboxylic butyronitrile, hydrogenated butyronitrile, powdery butylonitrile, a butyronitrile contained mixture or/and nitrile containing copolymer or grafts and halides of transition metals or/and oxygen containing salts, and is obtained by cross reacting at 200deg.C for 5 - 60minutes. Its advantages include no harmful materials used in production, good mechanical performance without carbon black added, oil-resistant, good adhesion with metals and regenerating ability.

The present invention relates to the preparation of high activity TiO2 photocatalyst with porous ceramic base, and is especially the nano titania powder and titania sol combining process of preparing regenerable high activity nano titania carried in porous ceramic. The present invention prepares the high activity nano titania carried in porous ceramic through the combination of two carrying processes, titania powder sintering process and sol-gel process. The process includes preparing titania sol via sol-gel process, mixing titania sol and titania powder in certain ratio while stirring and adding dispersant and adhesive to form new solution, carrying the solution to the surface of porous ceramic, fumigating the carrying ceramic in water vapor atmosphere to eliminate most of the organic matters, and final sintering at high temperature for strong combination between nano titania and carrier and raised activity of titania.

The present invention relates to one kind of functional biological carbon fiber and its preparation process and application as biomembrane carrier. The biomembrane carrier is prepared with polyacrylonitrile carbon fiber, and through electrochemical surface treatment in 5-20 % concentration ammonium bicarbonate electrolyte to increase the surface acid oxygen containing functional groups and raise wettability, and gluing with water soluble epoxy resin in the amount 0.5-2 %. The biomembrane carrier can fix nitrobacteria, sulfate reducing bacteria and anaerobic methanogen. It may be used in treating high concentration acrylon waste water, and can eliminate sulfate, COD and ammonia nitrogen effectively. In addition, the biomembrane carrier is easy to regenerate and has no secondary pollution.

The invention discloses a preparation method of Fe-Al intermetallic compound porous membrane, which comprises the following steps: firstly, adding a binder into an organic solution, and then adding gas-atomized spherical alloy powder and preparing suspended particle slurry by mixing and stirring; spraying the suspended particle slurry on a matrix surface uniformly, and forming a film and drying at room temperature; carrying out low temperature degreasing and high temperature sintering for the matrix with sprayed film, and carrying out an ordering processing for the alloy phase, and obtaining the Fe-Al intermetallic compound porous membrane. The Fe-Al intermetallic compound porous membrane prepared by the method provided by the invention has the advantages of high precision, good permeability, good mechanical properties and reproducibility.

The invention relates to a chiral diphosphine ligand and a chiral catalyst, and a preparation and application method thereof. The preparation method of a BINAP (2,2'-bis(diphenylphosphino)-1,1'-binaphthyl) chiral diphosphine ligand based on novel imidazole and imidazole cation modification. Imidazole and imidazole cation are introduced to the 5,5'- position of the BINAP molecule framework to synthesize the chiral diphosphine ligand. The assembly of the imidazole and imidazole cation into the chiral diphosphine ligand molecule can effectively enhance the stability of the chiral catalyst in an ionic liquid and the affinity with the imidazole ionic liquid, and avoids loss of the catalyst in the cyclic process. The imidazole-modified chiral diphosphine ligand has the following chemical structural formula, wherein the spatial configuration of the imidazole-modified chiral diphosphine ligand is S type or R type.

The invention relates to a preparation method of a Co based Fischer-Tropsch synthesis catalyst, which comprises the following steps of: firstly carrying out surface modification on a carrier made of silica gel; and then loading metallic aids and an active component Co by a immersion method, wherein in the surface modification method of the silicon gel, immersion treatment with a buffer solution containing ammonium salt is adopted. When reaching the same synthesis gas conversion rate, the Fischer-Tropsch synthesis catalyst prepared by the method requires obviously lower reaction temperature compared with the traditional catalyst, thereby effectively prolonging the service life of the catalyst.

The invention provides a carbon dioxide sorbent based on ordered mesoporous carbon and a preparation method. According to the preparation method, ordered mesoporous carbon is synthesized according to a solvent evaporation-induced self assembly (EISA) method, and supported polyethylene imine (PEI) modification is performed on ordered mesoporous carbon according to an impregnation method, so as to improve the hydrophobicity of the novel sorbent. The sorbent obtained according to the preparation method is uniform in pore size distribution and very high in orderliness; the sorbent adopts the structure of ordered mesoporous carbon, so that the heat stability is relatively high; the carbon dioxide adsorbing capacity of the sorbent and the hydrophobicity are relatively high. Therefore, based on such properties, the sorbent not only can adapt to a high-humidity environment, but also can be applied to an adsorbing process of which the temperature is above normal; meanwhile, the renewability is high, no pollutant is generated in the preparation process, and the technological process is environmentally friendly.

The invention discloses a renewable magnetic immobilized enzyme carrier and preparation method thereof, and belongs to the technical field of immobilized enzymes. The preparation method comprises the steps of compounding Fe3O4 nano-particles, preparing Fe3O4@TiO2 magnetic nano-composites of a core-shell structure, preparing anatase type Fe3O4@TiO2 nano-composites, carrying out functional modification on the surfaces of the nano-composites to obtain a Fe3O4@TiO2 immobilized enzyme carrier and the like. The immobilized enzyme carrier prepared through the preparation method composites the advantages of magnetic materials, nano materials, TiO2 and surficial functional group modification, has the advantages of having magnetic responsiveness, being renewable, high in biocompatibility, being in covalent link with target enzyme molecules, and being high in enzyme capacity value and good in stability. In addition, the preparation method is simple in technology, and reaction conditions are easy to control. According to the renewable magnetic immobilized enzyme carrier and the preparation method thereof, the immobilized carrier with excellent performance is provided for enzymes, cost of large-scale industrialized application of the enzymes can be reduced effectively, and the renewable magnetic immobilized enzyme carrier and the preparation method thereof have huge application potential in the field of immobilized enzymes.

The invention provides nanometer iron trioxide as well as a preparation method and a purpose of the nanometer iron trioxide. The nanometer iron trioxide has the following structural formula of alpha-Fe2O3, and X-ray powder diffractions obtained through measurement by using a Cu-K alpha ray via the nanometer iron trioxide have characteristic peaks through display when 2 theta is 24.1 degrees, 34.4 degrees, 36.0 degrees, 41.2 degrees, 50.2 degrees, 53.3 degrees, 57.6 degrees, 62.2 degrees and 63.7 degrees. When the nanometer iron trioxide provided by the invention is adopted for carrying out sewage treatment, the advantage of high sewage treatment efficiency is realized, in addition, the nanometer iron trioxide is solid, the reproducible performance is good, and the repeated utilization can be realized, so the sewage treatment cost can be reduced, and in addition, the advantage of simplicity in operation is also realized.

The invention provides a toughened polyamide resin composite material and a preparation method therefor. The composite material at least takes polyamide resin and an impact modifier as raw materials for production, wherein the polyamide resin at least takes pentamethylene diamine and dibasic acid as raw materials for production, and the impact modifier is any or a combination of more of polyolefin, an olefin copolymer, an elastic body and an inorganic inelastic body. The preparation method for the composite material comprises the steps of carrying out melting milling by at least taking the polyamide resin and the impact modifier as the raw materials for production, cooling a linear material, extruded after the melting milling, in water, and cutting the linear material into pellets, thereby obtaining the composite material, wherein the temperature for the melting milling is 30-50 DEG C higher than the melting point of the polyamide resin, and the time for the melting milling is 0.25-8 minutes. The composite material has good toughness in case of gaps or low temperature and can be applied to the field needing toughened materials; in addition, the toughened polyamide resin composite material can take non-petroleum resources as raw materials for production and is independent of petroleum resources.

The invention relates to a preparation method of a water-absorbing gel containing animal and plant fibers and inorganic nanoparticles. The water-absorbing gel in the prior art has the disadvantages of poor biological degradability, low gel strength and low salt tolerance. The preparation method disclosed by the invention comprises the following process steps: placing 5-7 parts by weight of gelatin into deionized water at the temperature of 40 DEG C, heating in a water bath at the temperature of 50 DEG C after full swelling of the gelatin, lightly shaking till complete dissolution, further dispersing 2-3 parts by weight of inorganic nano-powder into the deionized water, performing ultrasonic treatment for 10 minutes under ultrasonic waves, then uniformly dispersing 10-14 parts by weight of cellulose, then adding the prepared gelatin solution and inorganic nano-powder dispersion liquid, stirring for 30 minutes, adding 100 parts by weight of acrylic monomers, 2 parts by weight of initiator ammonium persulfate and 0.5 part by weight of cross-linking agent N, N-methylene-bis-acrylamide, increasing the temperature to 70-75 DEG C, and performing heat insulation reaction for 2-2.5 hours for preparation. A product obtained by the preparation method disclosed by the invention has the advantages of excellent biological degradability, gel strength and water absorption.

The invention relates to a preparation method of a heavy metal chelating adsorbent. A macromolecular organic heavy metal chelating adsorbent with good chemical stability is prepared by crosslinking and polymerizing four monomers including diethylenetriamine, carbon disulfide, sodium hydroxide and epoxy chloropropane under a certain conditions. The heavy metal chelating adsorbent has good selectivity, adsorption performance and renewable performance on heavy metal wastewater, in particular heavy metal ion, such as Ni<2+>, Cr<6+>, Cu<2+>, Zn<2+>, Pb<2+> and the like in sewage, such as chemical nickel plating waste liquid, electroplating waste liquid and the like. The preparation method disclosed by the invention is simple and free from by-products and is applicable to industrial production and application.

The invention discloses a solid acid catalyst suitable for a microwave-assisted reaction and a preparation method of the solid acid catalyst. The preparation method comprises the following steps: with grains or beans as a raw material, crushing, high-temperature carbonizing, concentrated sulfuric acid sulfonation, wet granulation after washing, and calcining to obtain the solid acid catalyst. The solid acid catalyst provided by the invention is simple to operate, short in period and low in cost in the whole preparation process, and is a novel solid acid catalyst which resists high temperature and is suitable for a microwave environment.

The invention relates to polysiloxane containing halamine and quaternary ammonium salt on a side chain. The polysiloxane has the structure as shown in the general formula (I). The invention also relates to a preparation method of the polysiloxane. The preparation method comprises the steps as follows: carrying out reaction between the raw material and R1 sylvite and then between the raw material and long-chain primary amine, so as to obtain the polysiloxane containing both N-halamine and quaternary ammonium salt characteristic functional groups on the side chain. The polysiloxane integrates the advantages of the N-halamine and quaternary ammonium salt on bactericidal performance, and has the characteristics of being wide in bactericidal range, high in sterilization speed and capable of regenerating; and the polysiloxane can be widely applied to various cleaning agents and bacteriacides and porous and hard surface coatings.

The invention discloses a method for preparing 5-hydroxymethylfurfural with carbohydrate. The method comprises the steps of mixing the carbohydrate A, a mixed solvent B, a Lewis acid catalyst C and a Bronsted acid catalyst D, heating a mixture at 120-200 DEG C, and controlling reaction time to be 15-180min to synthesize 5-hydroxymethylfurfural, wherein the carbohydrate A is monosaccharide, disaccharide or polysaccharide; Lewis acid catalyst C is a metal halide; the Bronsted acid catalyst D is inorganic acid; and the mixed solvent B is a mixed solvent of water and ethers. A reaction system is simple in composition, economical and environment-friendly; operating conditions are mild; the technical complexity of preparing 5-hydroxymethylfurfural with the carbohydrate taking glucose as a source is effectively simplified; and the productivity of 5-hydroxymethylfurfural is greatly improved at the same time.

The invention relates to a method of treating chemical pulp fibres by a polymerizing hydroxy acid, the fibres thus obtained and the products refined from them. In the method, the hydroxy acid reacts with the reactive groups of the fibres in the presence of a catalyst, forming ester bonds. The following units of the same hydroxy acid are oligomerized and/or polymerized to these grafted acid residues. The fibres thus treated and the products refined thereof endure better processing stages that include drawing and stretching than untreated fibres.

The invention provides a preparation method of a hyperbranched amine polymer modified cotton fiber adsorption material. The preparation method comprises the following steps: firstly, soaking cotton fibers subjected to alkaline treatment into a trimesoyl chloride solution, sealing with a preservative film, carrying out ultrasonic treatment and then taking out the cotton fibers, putting into a thermostat water bath with the temperature of 15 to 50 DEG C, carrying out thermostatic waterbath for 30 to 120 minutes and then cleaning with organic cleaning liquid; secondly, tiling the cotton fibers onfilter paper, putting into a filter and repeating the following operations for 3 to 6 times: pouring a hyperbranched amine polymer aqueous solution from the upper part, sealing, introducing nitrogen,pressurizing to 0.01 to 0.05 MPa, taking out after the pressurization is finished, and then washing with distilled water until the cleaning liquid is neutral; thirdly, tiling the modified cotton fibers on a culture dish and putting into a vacuum drying oven for drying and fixing. The preparation process disclosed by the invention is simple, and the operation is easy to control; the obtained modified cotton fiber material can adsorb and desorb pollutants such as heavy metal ions and organic dyes, so that removal or recovery of the pollutants is realized.

The invention belongs to the technical field of preparation and application of new materials, and in particular discloses a preparation method of a Ce-doped perovskite catalyst La(1-x)CexCoO3 (x is more than or equal to 0 and less than or equal to 0.15) and application of the catalyst in catalyzing oxygen to oxidize benzyl alcohol into benzaldehyde under constant pressure. In the method, mixing liquid of ethylene glycol and methanol is used as a solvent, and corresponding metal nitrate is dissolved, so that the Ce-doped perovskite catalyst is prepared in a sol-gel method. The obtained catalyst has a good macroporous structure and a large specific surface area; the catalyst is high in catalytic performance in reaction of catalyzing liquid phase molecular oxygen oxidized benzyl alcohol into benzaldehyde and has catalytic activity higher than that of a precious metal catalyst and a metal oxide catalyst which are reported under the same condition. According to the method, the preparation process is simple, the cost is low, the environment-friendly effect is achieved and the product performance is high; a realization condition of the catalyst in the reaction is simple, the activity is higher than that of a document report result, and the catalyst can be recycled and has a good application prospect.

The invention discloses an inorganic-organic composite film. A support is made of inorganic porous materials and comprises organic materials and cross-linking agents which sequentially coat the support, the thickness of the inorganic porous materials is 1mm-3mm, the thickness of the organic materials is 10-50 micrometers, and the pore diameter of the inorganic-organic composite film is 0.001-1 micrometer. The inorganic-organic composite film has high-strength, impact-resistant, high-precision and high-selectivity filtration performances, and is excellent in renewability. According to a preparation method of the inorganic-organic composite film, after prepared organic material casting solution and the cross-linking agents are poured into a tank, the surfaces of the inorganic porous materials are sequentially coated with the organic material and the cross-linking agents in a spin coating mode, film preparation procedures are finished, operation is simple and convenient, controllability is strong, and stability is high.

The invention discloses a catalyst for preparing C5 or C6 alkane from sugar or sugar alcohol via water-phase hydrogenolysis, and an application of the catalyst. The catalyst takes one or two of active carbon, ZrO2, TiO2, and Nb2O5 as a carrier, and takes a metal of Ru as an active metal. An oxide of Mo, Sn, or Mn is taken as an auxiliary agent. The metal of Ru takes 0.5-10.0% by mass percentage of the carrier. The atom mol ratio of Ru and Mo, Sn, or Mn is in a range of 0.2:1.0-5:1.0. The catalyst has excellent stability, can continuously stably operate more than 500h in a trickle bed reactor, and can be used for water-phase hydrogenolysis of sugar/ sugar alcohol and is high in activity to obtain C5/C6 alkane with a high yield. The problem that silicon-aluminum oxide or a molecular sieve supported catalyst is relatively poor in stability is solved.