摘要:
A fixed bed glycerol steam reforming catalyst comprises a support material loaded with a catalytically active material. The support material is a particle mixture of a basic mixed metal oxide comprising MgO-Al2O3 or MgO-Al2O3-CeO2, and the catalytically active material is an oxide of nickel. The catalyst has a specific surface area of 45 m2/g or more after calcination for 5 hours in ambient air at a temperature of 950 °C. Further, the use of the catalyst in a glycerol steam reforming process and a method for preparing the catalyst is presented.
摘要:
A method for obtaining the absorption position, mass and rigidity of a particle deposited on the surface of a resonator based on the relative change in the resonance frequency of said resonator in 3 or 4 flexural vibration modes. The rigidity of the particles is of great interest in the study of cells and other biological compounds that change state without significantly changing the mass.
摘要:
The invention relates to a nucleic acid sequence that improves resistance to biotrophic pathogens, in particular to Pseudomonas syringae, without affecting susceptibility to necrotrophs, in particular Botrytis cinerea. The present invention also relates to a plant that comprises the nucleic acid of the invention and a method to generate plants resistant to biotrophic pathogens and necrotrophs.
摘要:
The invention relates to an instrument for simulation of multifocal ophthalmic corrections, comprising two optical channels with different optical power values in the beams coming from the object observed, wherein at least one channel comprises a Badal system. This instrument simultaneously provides images of objects near and far focused. The system provides the same optical magnifications for each channel, regardless of the optical power thereof, and produces superimposed retinal images with different degrees of focus which, unlike other devices, are all of the same size. The instrument allows simulating different optical powers for near vision and different refractive corrections for distant vision.
摘要:
The present invention relates to a new process for synthesising the silicoaluminate form of the AEI zeolite structure based on the use of another zeolite, zeolite Y, as the only source of silicon and aluminum, in order to obtain high synthesis yields (greater than 80%) in the absence of any other source of silicon, phosphine-derivedcationsand fluoride anions in the synthesis medium. The N,N-dimethyl-3,5-dimethylpiperidinium cation may be used as the OSDA, and the FAU crystal structure is transformed into the AEI crystal structure with high yields. It also discloses the preparation of catalysts based on the silicoaluminate form of the AEI crystal structure, wherein Cu atoms have been introduced, and the subsequent application thereof as a catalyst, preferably in the SCR of NOx.
摘要:
The main object of the present invention is to provide a new method for preparing the copper-containing silicoaluminate form of the AEI zeolite structure by means of a direct synthesis methodology. This new process involves combining a organometallic copper-complex with an additional organic molecule capable of directing the crystallisation of the silicoaluminate form of the AEI zeolite structure as organic structure-directing agents (OSDAs).