47 results about "Dry media reaction" patented technology

A high throughput chemical synthesis system utilizing cylindrical reaction vessels is disclosed. Reaction vessels are utilized which include a tubular member adapted for placement of electronically readable identifying indicia thereon. The identifying indicia are representative of reaction conditions within the tubular member and of one or more reagents utilized in a reaction within the tubular members. A method of performing chemical synthesis on solid phase reactive material within a plurality of reaction vessels using a plurality of reaction stages resulting in final products and employing identifying indicia representing the reaction stages is also disclosed. The method includes reading the identifying indicia located on the reaction vessels, reacting one or more reagents within the reaction vessels under particular reaction conditions which may be determined by reading the identifying indicia, thereby synthesizing chemical compounds within the reaction vessels. The method allows chemical synthesis to occur according to a predetermined set of reactions and also allows for combinatorial chemistry to be performed utilizing random mix and split techniques. The final synthesized products may be tested for chemical or biological activity. The chemical structures of desired end products may be obtained by reading recorded information wherein the reaction conditions and reagents of reaction steps have been recorded, preferably in conjunction with the identifying indicia.

The invention discloses a solid base catalyst and application thereof in biodiesel synthesis. The catalyst is prepared by allowing organic metal salt and alkali or alkali carbonate to a solid phase reaction and calcining at a high temperature. The biodiesel is synthesized by ester exchange, by adding grease, low carbon alcohol and the solid base catalyst into a three-necked container to heat for refluxing under stirring, filtering to obtain catalyst, demixing the filtrate to obtain lower layer glycerol and upper layer mixture, adding NaHCO3 solution to the upper layer mixture, washing until a neutral condition, drying with anhydrous MgSO4, and vacuum distilling. The catalyst for biodiesel synthesis has the advantages of high yield, cheap price, small consumption amount, mild reaction condition, short reaction time, repeated use of the catalyst, no environmental pollution and low requirement for raw material.

A non-toxic gel solid phase reacting synthesis of composite ceramic powder is carried out by proportioning, preparing sodium alginate solution, mixing, ball milling, adding catalyst, gelating, drying and calcining. Its advantages include low cost, simple operation, no pollution and higher powder quality.

The invention belongs to the technical field of new energy materials, and particularly relates to a preparation method for a silicious manganese thermoelectric material. A solid-phase reaction preparation method for the silicious manganese thermoelectric material is characterized by comprising the steps as follows: (1) Si powder and Mn powder are taken as raw materials, weighed according to the molar ratio of (1.75-1.80):1, and mixed evenly to obtain evenly mixed powder; (2) the evenly mixed powder are put on a tabletting machine and pressed into a bulk, the bulk is placed into a quartz glasstube, the quartz glass tube is vacuumized and sealed and then is placed in a muffle furnace for 850-900 DEG C solid-phase reaction for 12-24 hours, and the product is obtained after heat preservationis finished and furnace cooling is carried out; (3) the product obtained in step (2) is ground into fine powder; and (4) the fine powder obtained in step (3) is subjected to electric discharge plasmasintering, and the compact silicious manganese thermoelectric material can be obtained. The method has the advantages of simple process, low cost, energy conservation, and low requirements for instruments and equipment, and is suitable for commercial manufacture.

The invention discloses a compound low-temperature pre-sintering method of ferrite monoliths structure materials, which comprises the steps of: 1. confirming reference indexes, and preparing raw materials; 2. compositely and previously sintering: previously sintering powder materials of the step 1 at least two times, wherein the first previous sintering leads the solid phase reaction to happened among the each raw material, so that all or some of the raw materials are changed into the ferrite to be taken as a base for the second previous sintering; detecting the powder materials after the first previous sintering, and confirming the technology condition of the second previous sintering according to a detecting result, wherein the second previous sintering leads the non-extensive quantity of the galvanomagnetic property in the raw materials to meet or exceeds the requirement of product performance; confirming the temperature and the technology of the nest previous sintering according to the formulation of the materials and the requirement of the product performance; and detecting the powder materials after the previous sintering, wherein if the product performance after the previous sintering can not meet the requirement of the product performance, sintering for several time, and if the product performance after the previous sintering can not meet the requirement of the product performance, granulating and shaping; 3. granulating and shaping; and 4. low-temperature sintering, the temperature of the low-temperature sintering is lower than the maximum temperature in the process of pre-sintering, and the compared with the normal process, the temperature is faster raised.

A process produces a sulfonated solid particle by burning sulfur to yield gaseous sulfur dioxide, subjecting the gaseous sulfur dioxide to catalytic oxidation to yield gaseous sulfur trioxide, and sulfonating a dry powdery or granular solid particle with the gaseous sulfur trioxide in a gas phase-solid phase reaction.

The invention discloses a method for preparing a one-dimensional cuprous oxide / carbon nanocomposite catalyst and application. The method disclosed by the invention comprises the following steps: by utilizing an intercalation assembly of salicylate and metal ions, preparing salicylate intercalation layered copper hydroxide having one-dimensional morphology; carrying out solid-state pyrolysis and low-temperature oxidation two-step solid-phase reactions, thereby obtaining the one-dimensional cuprous oxide / carbon nanocomposite catalyst. According to the method disclosed by the invention, cheap water soluble salts serve as reactants, any organic solvent, surfactant, extra carrier, template agent or reducing agent is not needed in the preparation process, the prepared catalyst particle is uniform in distribution, high in purity and high in crystallinity, and the Cu nanoparticles form Cu2O having a hollow structure by utilizing a Kirkendall effect. The catalyst synthesized in the invention has excellent catalytic performance and excellent cycling stability in a liquid phase hydrogenation reaction of p-nitrophenol.

The invention discloses a method for preparing multibasic oxide nanometer particles based on a core-shell structure three-dimensional micro-solid-phase reaction. The method comprises the following steps of: with an oxide particle, which is one of prepared multibasic oxides and has easily controlled morphology, as a core, carrying out appropriate surface charge modification so that other element ions evenly wrap the oxide particle so as to form an oxide particle core-shell structure precursor; and during calcination, implementing low-temperature phase transformation and particle morphology control through the three-dimensional micro-solid-phase reaction between the shell made of the nanometer oxide or an amorphous part generated by decomposition and the wrapped nucleus, thereby obtaining the multibasic oxide nanometer particle and providing a raw material base for the preparation of corresponding ceramic.

The invention belongs to the technical field of new energy materials, and particularly relates to a preparation method for a silicious manganese thermoelectric material. A solid-phase reaction preparation method for the silicious manganese thermoelectric material is characterized by comprising the steps as follows: (1) Si powder and Mn powder are taken as raw materials, weighed according to the molar ratio of (1.75-1.80):1, and mixed evenly to obtain evenly mixed powder; (2) the evenly mixed powder are put on a tabletting machine and pressed into a bulk, the bulk is placed into a quartz glasstube, the quartz glass tube is vacuumized and sealed and then is placed in a muffle furnace for 850-900 DEG C solid-phase reaction for 12-24 hours, and the product is obtained after heat preservationis finished and furnace cooling is carried out; (3) the product obtained in step (2) is ground into fine powder; and (4) the fine powder obtained in step (3) is subjected to electric discharge plasmasintering, and the compact silicious manganese thermoelectric material can be obtained. The method has the advantages of simple process, low cost, energy conservation, and low requirements for instruments and equipment, and is suitable for commercial manufacture.