Abstract:
Die vorliegende Erfindung betrifft die oxidative Kopplung von Methan zu höheren Alkanen und Alkenen, bei der der Sauerstoff durch eine gasdichte, gemischt leitende Membran der Reaktionszone zugeführt wird. Die oxidative Kopplung erfolgt katalytisch, wobei die gasdichte Membran als Katalysator dienen kann, aber auch zusätzlich ein bei der oxidativen Kopplung von Methan aktiver Katalysator eingesetzt werden kann.
Abstract:
Die vorliegende Erfindung betrifft ein Verfahren zur Herstellung einer wässrigen Polymerdispersion durch radikalische Emulsionspolymerisation eines Monomergemischs, das N,N-Diethylaminoethylmethacrylat enthält, die nach diesem Verfahren erhältliche Polymerdispersion und deren Verwendung.
Abstract:
The invention relates to the use of solutions of ethylenically unsaturated polyesters to produce carbon membranes that are suitable for gas separation and to a method for producing carbon membranes that are suitable for gas separation, comprising the steps: a) coating a porous substrate with a solution of ethylenically unsaturated polyesters, b) drying the polyester coating on the porous substrate by removing the solvent, c) pyrolyzing the polyester coating on the porous substrate in order to form the carbon membrane that is suitable for gas separation, wherein each of the steps a) to c) or the sequence of steps a) to c) can be performed several times.
Abstract:
The invention relates to a method for treating plant pathogenic microorganisms by treating the crop plants, soil, or plant reproductive material to be protected with an effective quantity of copper salt particles, comprising a water-soluble polymer and having a primary particle diameter of 1 to 200 nm. The invention further relates to an aqueous suspension of the above copper salt particles and the use of said suspension for protecting plants.
Abstract:
The invention concerns a method for producing chlorine and a hydrochloric gas including the following steps: a) supplying via a stream containing hydrochloric gas (a1) and a stream containing oxygen (a2) an oxidation zone and a hydrochloric gas catalytic oxidation with chlorine, a stream of gaseous product (a3) containing chlorine, water, oxygen, carbon dioxide, and the inert gases obtained; b) cooling the stream of gaseous products (a3) and separating the water from the hydrochloric gas in the form of hydrochloric acid, a gas stream (b) containing chlorine, water, oxygen, carbon dioxide, and the inert gases still remaining; c) optionally drying the gas stream (b), and obtaining a gas stream (c) substantially water-free, containing chlorine, oxygen, carbon dioxide and inert gases; d) liquefying at least partly the gas stream (c) and a return stream (f1) rich in chlorine, containing chlorine, oxygen, carbon dioxide through thickening and cooling, a partly liquefied stream (d) being preserved; e) gas-liquid separation of the stream (d) into a gas stream (e1) containing chlorine, oxygen, carbon dioxide, and inert gases and into a liquid stream (e2) containing chlorine, oxygen, and carbon dioxide; f) introducing at least part of the gas stream (e1) into a unit with membrane and separating a return stream (f1) rich in chlorine and a gas flow (f2) poor in chlorine, containing chlorine, oxygen, carbon dioxide, via a separation by the membrane and reintroducing the return flux (f1) rich in chlorine in step d); g) separating the liquid stream (e2) by distillation into a stream of chlorine (g1) and a stream (g2) comprising substantially oxygen and carbon dioxide.
Abstract:
The invention relates to a method for concentrating an at least partially crystalline solid containing at least one zeolite in a mixture, said mixture containing at least one auxiliary agent, for example a template compound, and the cited solid. The inventive method is characterised in that the mixture is divided into a retentate and a permeate in one step (II) by means of ultrafiltration, the solid content in the retentate being higher than that in the mixture and the solid content in the permeate being lower than that in the mixture. Said method enables auxiliary agents in the permeate, especially template compounds, to be redirected into a crystallisation step (I) which precedes the cited step (II).
Abstract:
A membrane contains a polymer composition is described. The polymer composition contains a) at least one polymer of PA, PVA, Cellulose CA, CTA, CA-triacetate blend, cellulose ester, cellulose nitrate, regenerated cellulose, aromatic, aromatic/aliphatic or aliphatic polyamide, aromatic, aromatic/aliphatic or aliphatic polyimide, PBI, PBIL, PAN, PAN-PVC copolymer, PAN-methallyl sulfonate copolymer, PEI, PEEK, sulfonated SPEEK, PPO, poly-carbonate, polyester, PTFE, PVDF, PP, a polyelectrolyte complex, PMMA, PDMS, aromatic, aromatic/aliphatic or aliphatic polyimide urethane, aromatic, aromatic/aliphatic or aliphatic polyamidimide, crosslinked polyimide or poly-arylene ether, PSU, PPSU and PESU, and b) at least one dope polymer DP1, which is a polyalkylene oxide with a molecular mass Mw of more than 100,000 g/mol and/or a K-value of 60 or 20 more.
Abstract:
The invention relates to a method for producing aromatic amines by the catalytic hydration of the corresponding nitro compounds, particularly for producing toluylenediamine by the hydration of dinitrotoluene, characterized in that hydration catalysts are employed, in which a mixture of nickel, palladium and an addition element, selected from the group containing cobalt, iron, vanadium, manganese, chromium, platinum, iridium, gold, bismuth, molybdenum, selenium, tellurium, stannous, and antimony, is present as the active component on a carrier.
Abstract:
The present invention relates to a method for producing surface-modified nanoparticulate particles of at least one metal oxide, metal hydroxide, and/or metal oxide hydroxide, and aqueous suspensions of said particles. The invention further relates to the surface-modified nanoparticulate particles of at least one metal oxide, metal hydroxide, and/or metal oxide hydroxide and aqueous suspensions of said particles obtainable with said method, and the use thereof in cosmetic sun protection preparations, as stabilizers in plastics, and as antimicrobial agents.