摘要:
Acetaldehyde is removed from C.sub.3 -C.sub.15 hydrocarbons by contacting the hydrocarbon or a hydrocarbon mixture in liquid phase with a zeolite whose pores have a width which is greater than 0.3 nm and up to 0.75 nm.
摘要:
An illumination system and a projection objective of a mask inspection apparatus are provided. During operation of the mask inspection apparatus, the illumination system illuminates a mask with an illumination bundle of rays having a centroid ray that has a direction dependent on the location of the incidence of the illumination bundle of rays on the mask.
摘要:
A projection exposure system (10) for microlithography which includes: a mask holding device (14) holding a mask (18) with mask structures (20) disposed on the mask, a substrate holding device (36) holding a substrate (30), projection optics (26) imaging the mask structures (20) onto the substrate (30) during an exposure process, and a measurement structure (48) disposed in a defined position with respect to a reference element (16) of the projection exposure system (10), which defined position is mechanically uncoupled from the position of the mask holding device (14). The projection exposure system (10) also includes a detector (52) arranged to record an image of the measurement structure (48) imaged by the projection optics (26). The projection exposure system (10) is configured such that during operation of the projection exposure system (10) the imaging of the mask structures (20) and the imaging of the measurement structure (48) take place at the same time by the projection optics (26. An evaluation device (54) is configured to establish a lateral position of the image of the measurement structure (48) in the area of the detector (52) during the exposure process.
摘要:
A process for producing propylene oxide comprising reacting propene with hydrogen peroxide in the presence of a catalyst to give a mixture (G1) comprising propylene oxide, unreacted propene, and oxygen; separating propylene oxide from mixture (G1) to give a mixture (GII) comprising propene and oxygen; and adding hydrogen to mixture (GII) and reducing the oxygen comprised in mixture (GII) at least partially by reaction with hydrogen in the presence of a catalyst comprising copper in elemental and/or oxidic form on a support, wherein copper is present on the support in an amount of 30 to 80 wt.-% based on the whole catalyst and calculated as CuO.
摘要:
An object of the present invention relates to a porous metal organic framework comprising at least one first organic compound and ions of at least one metal, with the skeleton of the framework being formed at least partly by the at least one first organic compound coordinating at least partly in a bidentate fashion to at least two ions of the at least one metal, where the at least one metal is lithium and the at least one first compound is derived from formic acid or acetic acid. Also provided a process for preparing the porous metal organic framework and its use for gas storage or separation.
摘要:
The present invention relates to a process for the separation of at least one unbranched C4-C2O hydrocarbon from a fluid mixture containing the unbranched hydrocarbon and at least one branched isomer of the unbranched hydrocarbon, which comprises the step of—contacting the fluid mixture with an adsorbent comprising a porous metal organic framework material, which material comprises at least one at least bidentate organic compound coordinately bound to at least one metal ion, to get the unbranched hydrocarbon adsorbed, wherein the at least one at least bidentate organic compound is a monocyclic, bicyclic or polycyclic ring system which is derived from at least one heterocycle selected from the group consisting of pyrrole, alpha-pyridone and gamma-pyridone and has at least two ring nitrogens and is unsubstituted or bears one or more substituents selected independently from the group consisting of halogen, Ci-6-alkyl, phenyl, NH2, NH(d-6-alkyl), N(C1-6-alkyl)2, OH, Ophenyl and OCi-6-alkyl, where the substituents Ci_6-alkyl and phenyl are unsubstituted or bear one or more substituents selected independently from the group consisting of halogen, NH2, NH(d-6-alkyl), N(C1-6-alkyl)2, OH, Ophenyl and OCi-6-alkyl. The present invention also relates to the use of said porous metal-organic framework material in a process for the separation of unbranched hydrocarbons from their branched isomers.
摘要:
A vacuum insulation unit having at least one thermally insulating, evacuatable porous core material which is sealed in an airtight manner and a sorption medium, wherein the sorption medium containing at least one porous metal-organic framework comprising at least one at least bidentate organic compound coordinated to at least one metal ion.
摘要:
Disclosed are processes for the preparation of copper containing molecular sieves with the CHA structure wherein the copper is exchanged into the Na+-form of the Chabazite, using a liquid copper solution wherein the concentration of copper is in the range of about 0.001 to about 0.4 molar. Also described are copper containing molecular sieves with the CHA structure, catalysts incorporating molecular sieves, systems and methods for their use.
摘要:
The present invention relates to a tectosilicate having an X-ray diffraction pattern in which at least the following reflections occur: Intensity (%)Diffraction angle 2θ/° [Cu K(alpha 1)] 100 9.8-10.2 24-3411.0-11.4 9-1915.5-15.9 12-2219.4-19.6 19-2919.6-19.8 100% relating to the intensity of the maximum peak in the X-ray diffraction pattern.
摘要:
The present invention relates to vacuum insulation units comprising at least one thermally insulating, evacuatable porous core material which is sealed in an airtight manner and a sorption medium, wherein the sorption medium comprises at least one porous metal-organic framework comprising at least one at least bidentate organic compound coordinated to at least one metal ion, and also shaped bodies comprising such a vacuum insulation unit.Furthermore, the present invention relates to the use of a porous metal-organic framework as getter material in a vacuum insulation unit.