摘要:
A monolithic catalyst system for the cleavage of water into hydrogen and oxygen comprises a first photoactive material capable by itself or together with an auxiliary material and/or an auxiliary catalyst when irradiated with light having a wavelength≧420 nm of generating oxygen and protons from water, and a second photoactive material capable by itself or together with an auxiliary material and/or an auxiliary catalyst when irradiated with light having a wavelength≧420 nm of reducing protons in water to hydrogen. The first and second photoactive materials are in electrical contact via an electron-conducting material.
摘要:
A monolithic catalyst system for the cleavage of water into hydrogen and oxygen with the aid of light comprises a first photoactive material capable by itself or together with one or more of an auxiliary material and an auxiliary catalyst of generating oxygen and protons from water, when irradiated with light having a wavelength ≧420 nm of generating oxygen and protons from water, and a second photoactive material selected from gallium arsenide, copper indium disulphide/selenide, copper indium gallium disulphide/selenide and cadmium sulphide/selenide/telluride and having a water resistant coating transparent to visible light capable of the reducing protons in water to hydrogen, when irradiated with visible light. The first photoactive material and the second photoactive material are supported on at least one substrate and are in electrical contact, particularly in direct electrical contact, exclusively via one or more electron-conducting materials. The first photoactive material is not silicon, a III-V semiconductor or II-VI semiconductor or II-VI semiconductor or similar semiconductor having divalent or trivalent cations and anions of the groups Va and VIa of the periodic table of elements or semiconductor which is comprised of elements of the groups Ib (copper group), IIa, and VI or another inorganic photoconductor which is used in photovoltaic. Also disclosed is a process for cleaving water into hydrogen and oxygen with the aid of light using the catalyst system.
摘要:
Described is a monolithic catalyst system (1) for the cleavage of water into hydrogen and oxygen with the aid of light, comprising a first photoactive material (50) capable by itself or together with one or more auxiliary catalysts when irradiated with light having a wavelength ≧420 nm of generating oxygen and protons from water, and a second photoactive material (60) capable by itself or together one or more auxiliary catalysts (92) when irradiated with light having a wavelength ≧420 nm of reducing protons in water to hydrogen, the first photoactive material (50) and second photoactive material (60) being in electrical contact via one or more electron-conducting materials (30, 20, 40, 60a) the system being in that characterized in that a load or an electric consumer is interposed in between at least one electron-conducting material. Likewise described is a method of generating oxygen, hydrogen and electricity from water using the catalyst system.
摘要:
A monolithic catalyst system for the cleavage of water into hydrogen and oxygen comprises a first photoactive material capable by itself or together with an auxiliary material and/or an auxiliary catalyst when irradiated with light having a wavelength ≧420 nm of generating oxygen and protons from water, and a second photoactive material capable by itself or together with an auxiliary material and/or an auxiliary catalyst when irradiated with light having a wavelength ≧420 nm of reducing protons in water to hydrogen. The first and second photoactive materials are in electrical contact via an electron-conducting material.
摘要:
A pretensioning device (10) for a safety belt, of a motor vehicle, having a gas generator (17), a piston (21) guided in a tube (16), which closes a pressure area (20) in the tube (16) that is pressurized by the gas generator (17) whereupon the piston (21) is able to move in a pretensioning movement which is able to be conveyed to the safety belt by means of an inertia body (19a) resting on a front face (9) of the piston (21). The piston (21) forms a pass-through opening (1) releasable upon exceeding of a predetermined pressure and a recess (26) is provided in the front face (9) with an inertia body (19a) resting thereon, so that a flow connection is created from the pass-through opening (1) to the area (25) located behind the piston (21) in the direction of the pretensioning movement (S).
摘要:
According to the invention there is provided a compound of formula I or a pharmaceutically acceptable salt or hydrate thereof; wherein the variables are as defined herein. The compounds selectively attenuate the production of Aβ42 and hence are useful in treatment of Alzheimer's disease and related conditions.
摘要:
Compounds of formula I: Selectively attenuate production of Aβ(1-42) and hence find use in treatment or prevention of diseases associated with deposition of Aβ in the brain, in particular Alzheimer's disease.
摘要:
The invention refers to a method of resonance spectroscopy for the analysis of statistical properties of samples, comprising the following steps: a) recording of a complex resonance frequency spectrum of each sample by means of phase sensitive quadrature detection; b) numerical differentiation of the recorded complex resonance frequency spectra versus frequency; c) determination of the absolute value of each differentiated complex resonance frequency spectrum (=fingerprint); d) allocation of each fingerprint to a point of a multidimensional point set; and e) performing a pattern analysis of the generated points for characterizing the statistical properties of the samples. The inventive method tolerates unintended variances of measurement in the recorded resonance. frequency spectra, in particular caused by phase errors, and allows reliable automated spectral analysis.
摘要:
An apparatus for separating liquids, in particular water, from gasses, in particular for separating entrained water from the intake air of an internal combustion engine. This is achieved by appropriately configuring a selected connection site in the intake section which precedes the air filter of the internal combustion engine. This has the advantage of requiring no parts in addition to the air conduit pieces already present. Separated water may be discharged, for example, through an outlet valve or small opening.
摘要:
The present invention relates to an aqueous silicone dispersion, capable of being cross-linked into an elastomer by removing water and optionally alcohol and/or carboxylic acid, said dispersion being based on at least one polyorganosiloxane (A) having at least two condensable or hydrolysable OR.sup.a groups per molecule wherein R.sup.a =H or alkyl, as well as at least one surficant (B). The technical problem consisting of perfecting a stable dispersion capable of being cross-linked into an elastomer that is highly adhesive on any support and that has suitable and economic mechanical properties is solved since this dispersion includes an amino-functionalised polyorganosiloxane (C) of the DTT(N)(OMe) resin type redistributed with aminoethylaminopropyltrimethoxysilane, optionally at least one hydroxylated and/or alkoxylated silicone resin (D), optionally at least on alkoxysilane (E) donating the -OR.sup.a terminals of the polydiorganosiloxane (A), optionally at least on condensation catalyst (F) and optionally at least one optionally siliceous filler (G).