50 results about "Rubidium compound" patented technology

The present invention provides a method of producing an optical element without the need for high vacuum, unlike the thin film deposition methods, and without using a molten salt. More specifically, the invention provides a method of producing an optical element comprising applying a paste containing at least one compound selected from lithium compounds, potassium compounds, rubidium compounds, cesium compounds, silver compounds, and thallium compounds, an organic resin, and an organic solvent to a glass substrate containing an alkali metal component as a glass component and then performing heat treatment at a temperature below the softening temperature of the glass substrate.

The invention relates to a method for preparing styrene by ethylbenzene dehydrogenation, which is mainly used for solving the problem of uneconomical styrene production due to inadequate strength of low-potassium catalyst and low stability under the condition of low water ratio. The technical scheme adopted by the invention is as follows: ethylbenzene, which is used as the raw material, contacts the catalyst to react to generate styrene under the conditions that the ethylbenzene airspeed is 0.5-3.0 h<-1>, the weight ratio of water to ethylbenzene is 1.0-4.0, the reaction temperature is 570-645 DEG C, and the reaction pressure is 0-20 KPa; and the catalyst is prepared by adding a rubidium compound and at least one of medium rare earth oxides comprising Pm2O3, Eu2O3, Gd2O3 and Dy2O3 into the ferrum-potassium-cerium-tungsten-calcium catalytic system, thus the problem of uneconomical styrene production is preferably solved, and the method provided by the invention can be used for preparing styrene by ethylbenzene dehydrogenation in an industrial production mode.

A compound of rubidium sodium chloroborate and rubidium sodium chloroborate optical crystal, its preparation method and application. The compound rubidium sodium chloroborate has a chemical formula of RbNa2B6O10Cl and a molecular weight of 391.76. It is synthesized by a solid-state reaction method. The chemical formula of the rubidium sodium chloroborate optical crystal is RbNa2B6O10Cl. Molecular weight 391.76, belongs to orthorhombic crystal system, space group P212121, unit cell parameters are a=8.3251(3)Å, b=9.6543(3)Å, c=12.7544(4)Å, Z=4, V=1025.11(6 )Å3, the light transmission band is between 190nm and 2600nm, and the crystal is grown by the high-temperature melt method. The rubidium sodium chloroborate optical crystal has moderate mechanical hardness, is easy to cut, polish, process and store, is insoluble in water, does not deliquesce, and is insoluble in air. Medium stability, suitable for making optical devices such as windows, lenses and prisms. For example: windows, hoods or fairings used in infrared detectors and aircraft; convex lenses used in microscopes and telescopes; prisms used in periscopes, binoculars and other instruments to change the direction of light.