摘要:
A method for synthesis of lactic acid and its derivatives is provided. First, a mixture is prepared, which includes: at least one carbohydrate-containing raw material, at least one alcohol, at least one composite catalyst containing metal chloride(s) (MCln) and tin-containing compound(s), and at least one solvent, wherein M is selected from a group consisting of Li+, Na+ K+, Mg2+, Ca2+, Sr2+, Ga3+, In3+, Sb3+, Bi3+, Cr3+, Mn2+, Fe2+, Co2+, Ni2+, Zn2+, and n represents 1, 2 or 3. Then, the mixture is heated to obtain lactic acid and its derivatives. By using the above catalyst and method, it is capable of converting carbohydrate-containing raw material to lactic acid and its derivatives directly in a more efficient and economical way.
摘要:
An anode provided with an electrocatalytic coating comprising tin, preferably tetravalent and in form of mixed oxide, prepared by the method for the manufacturing of an electrode, comprising applying a solution of a precursor for the pyrolytic formation of a tin-containing coating to a substrate of a valve metal, followed by the execution of thermal treatment, wherein the precursor solution comprises stannic hydroxychioride and a method of preparing the same.
摘要:
A METHOD AND A DEVICE FOR CARRYING OUT CHEMICAL AND METALLURGICAL PROCESSES INVOLVING AT LEAST ONE ELECTRICALLY CONDUCTIVE MEDIUM IN WHICH THE ELECTRICALLY CONDUCTIVE MEDIUM IS LIQUID AND WHEREIN THE LIQUID MEDIUM IS UNDER THE INFLUENCE OF A ROTATING ELECTRICAL FIELD WHICH CAUSES ITS SURFACE TO BE DEFORMED AND ENLARGED RELATIVE TO WHEN THE FIELD IS INACTIVE.
摘要:
A PROCESS FOR THE DEHYDRATING OF AQUEOUS SOLUTIONS CONTAINING TETRAVALENT TIN AND CHLORIDE IONS BY TREATMENT THEREOF WITH SULFURIC ACID OR OLEUM TO FORM AN UPPER PHASE CONTAINING SULFURIC ACID AND A LOWER PHASE CONSISTING OF ANHYDROUS STANNIC CHLORIDE AND REMOVING AND RECOVERING THE LOWER PHASE AS AN ANHYDROUS STANNIC CHLORIDE PRODUCT.
摘要:
The present invention relates to the use of specific styrene derivatives in the production of an elastomeric copolymer. The invention further relates to a method for producing an elastomeric copolymer and an elastic copolymer. Moreover, the invention relates to a method for preparing a rubber comprising vulcanizing the elastomeric copolymer, and a rubber as obtainable according to the method. Further, the invention relates to a rubber composition, a tire component comprising the rubber composition, and a tire comprising the tire component.
摘要:
The present disclosure provides a catalyst for preparing lactic acid and derivatives thereof, comprising at least one of metallic compounds MXn, wherein M is selected from Na, K, Mg, Ca, Sr, Ba, Al, Ga, In, Sn, Sb, Bi, Cr, Mn, Fe, Co, Ni and Zn, and n is an integer of 1 to 6. The present disclosure further provides a method for synthesis of lactic acid and derivatives thereof, wherein at least one raw material including carbohydrates, at least one alcohol, at least one of the aforesaid catalysts and at least one solvent are heated to react to prepare lactic acid and derivatives thereof.
摘要:
An electrode for electrochemical processes with tin dioxide-containing catalytic coating is prepared starting from a precursor solution comprising tin (IV) hydroxychlorides. The process of deposition of tin dioxide is characterized by a high yield and an improved reproducibility.