摘要:
The invention relates to a method of obtaining polyoxygenated organic compounds. The inventive method is characterized in that it comprises the oxidation reaction of a diether, preferably an acetal, with an oxygen source, in the presence of: one or more radical initiating agents, one or more additives that generate a basic reaction medium, and one or more catalysts.
摘要:
The invention relates to a method for extracting biochemical products obtained from a process of hydrothermal carbonization of biomass, which includes feeding an aqueous mixture of biomass from a preheating tube for the aqueous mixture of biomass to a vertical reactor with a predetermined level of floatation and an area for accumulation of steam and gases in the upper part thereof, wherein said method for extracting biochemical products is characterized in that it includes (a) heating the aqueous mixture of biomass to, or above, evaporation temperature in said vertical reactor and/or in a previous stage of preheating the aqueous mixture of biomass, increasing the generation of stream and/or gases at the predetermined flotation level of the vertical reactor, (b) extracting the steam and/or gases generated in the previous stage and accumulated in the upper part of the vertical reactor, and (c) cooling the gases and/or condensing the steam extracted in the previous stage at different levels of temperature and pressure. The invention likewise relates to the biochemical product obtainable from said method, as well as to a system for implementing said method.
摘要:
The invention relates to a method for extracting biochemical products obtained from a process of hydrothermal carbonization of biomass, which includes feeding an aqueous mixture of biomass from a preheating tube for the aqueous mixture of biomass to a vertical reactor with a predetermined level of floatation and an area for accumulation of steam and gases in the upper part thereof, wherein said method for extracting biochemical products is characterized in that it includes (a) heating the aqueous mixture of biomass to, or above, evaporation temperature in said vertical reactor and/or in a previous stage of preheating the aqueous mixture of biomass, increasing the generation of stream and/or gases at the predetermined flotation level of the vertical reactor, (b) extracting the steam and/or gases generated in the previous stage and accumulated in the upper part of the vertical reactor, and (c) cooling the gases and/or condensing the steam extracted in the previous stage at different levels of temperature and pressure. The invention likewise relates to the biochemical product obtainable from said method, as well as to a system for implementing said method.
摘要:
The invention relates to an aldehyde conversion method comprising putting an aldehyde into contact with oxygenated water and with a catalyst, under oxidation conditions, wherein the catalyst is a molecular sieve with pores of a diameter of at least 0.52 nm and has an empirical formula in a calcined and dehydrated form of (SnxTiySi1-x-y-zGez)O2 wherein x is a molar fraction of the tin and has a value between 0.001 and 0.1; y is a molar fraction of titanium and has a value from zero to 0.1; and z is the molar fraction molar of the germanium and has a value from zero to 0.08.
摘要翻译:本发明涉及醛转化方法,其包括在氧化条件下将醛与含氧水和催化剂接触,其中催化剂是直径为至少0.52nm的孔的分子筛,并且具有经验式 煅烧和脱水形式的<?in-line-formula description =“In-line Formulas”end =“lead”?(Sn x x Ti x Si x Si α-in-line-formula description =“In-line Formulas”end =“tail”?>其中x(x,y) 是锡的摩尔分数,其值在0.001和0.1之间; y是钛的摩尔分数,其值为0至0.1; z是锗的摩尔分数摩尔,其值为零至0.08。
摘要:
Applicants have developed a process for the oxidation of ketones to esters. The process involves contacting the ketone with hydrogen peroxide and a catalyst at oxidation conditions. The catalyst is a molecular sieve represented by the empirical formula: (MwSnxTiySi1−x−y−zGez)O2 where M is a trivalent metal such as aluminum or boron. These molecular sieves have a microporous three dimensional framework structure of at least SiO2 and SnO2 tetrahedral units, a crystallographically regular pore system and the characteristic x-ray diffraction pattern of zeolite beta.
摘要:
The present invention refers to a process for the production of myrtanal from β-pinene epoxide that comprises at least of putting this epoxide in contact with a microporous and crystalline catalyst with pores of a diameter of at least 0.52 nm with an empirical formula for the calcinated and dehydrated form of Hw(MwTixSnyZrzSi1-w-x-y-z)O2 where M is at least a metal with valence+3 selected from Al, B, Ga, Fe, Cr and combinations of these; w is a molar fraction of M with a value of between 0 and 2(x+y+z); x is a molar fraction of titanium and has a value of between 0 and 0.06; y is a molar fraction of tin and has a value of between 0 and 0.06; z is a molar fraction of zirconium and has a value of between 0 and 0.06; and where at least one of the three values “x”, “y” or “z” is different from zero. In the present invention, the microporous and crystalline catalyst preferably has pores of at least 0.52 nm and has a crystalline structure with an X-ray diffractogram of a zeolite beta.
摘要:
The invention relates to catalytically bleaching substrates, especially laundry fabrics, with atmospheric oxygen or air. A method of bleaching a substrate is provided that comprises applying to the substrate, in an aqueous medium, a specified ligand from a selected class which forms a complex with a transition metal, the complex catalysing bleaching of the substrate by atmospheric oxygen. Also provided is an aqueous bleaching composition substantially devoid of peroxygen bleach or a peroxy-based or -generating bleach system. Also provided is a method of treating a textile such as a laundry fabric whereby a complex catalyses bleaching of the textile by atmospheric oxygen after the treatment. The catalyst may be used in dry form, or in a liquor that is then dried, such as an aqueous spray-on fabric treatment fluid or a wash liquor for laundry cleaning, or a non-aqueous dry cleaning fluid or spray-on aerosol fluid. The method can confer cleaning benefits to the textile after the treatment. Also provided is a dry textile having a catalyst applied or deposited thereon, whereby bleaching by atmospheric oxygen is catalysed on the textile.
摘要:
A hand-held power tool has a tool member and a motor drivingly connected to the tool member, wherein the motor is arranged in a motor housing. A battery for driving the tool member is provided. A guide shaft has arranged on its first end the battery and on its second end the motor housing and the tool member. A rotatably power output part arranged on the motor housing is drivingly connected to the motor. The power output part supports the tool member. Cooling air is sucked through the guide shaft into the motor housing. Between the power output part and the motor housing an annular air exit gap is formed through which the cooling air exits the motor housing. At least one guide vane that projects into the annular air exit gap is provided.
摘要:
The present invention refers to a process for the production of myrtanal from β-pinene epoxide that comprises at least of putting this epoxide in contact with a microporous and crystalline catalyst with pores of a diameter of at least 0.52 nm with an empirical formula for the calcinated and dehydrated form of Hw(MwTixSnyZrzSi1-w-x-y-z)O2 where M is at least a metal with valence+3 selected from Al, B, Ga, Fe, Cr and combinations of these; w is a molar fraction of M with a value of between 0 and 2(x+y+z); x is a molar fraction of titanium and has a value of between 0 and 0.06; y is a molar fraction of tin and has a value of between 0 and 0.06; z is a molar fraction of zirconium and has a value of between 0 and 0.06; and where at least one of the three values “x”, “y” or “z” is different from zero. In the present invention, the microporous and crystalline catalyst preferably has pores of at least 0.52 nm and has a crystalline structure with an X-ray diffractogram of a zeolite beta.
摘要:
A hand-held power tool has a tool member and a motor drivingly connected to the tool member, wherein the motor is arranged in a motor housing. A battery for driving the tool member is provided. A guide shaft has arranged on its first end the battery and on its second end the motor housing and the tool member. A rotatably power output part arranged on the motor housing is drivingly connected to the motor. The power output part supports the tool member. Cooling air is sucked through the guide shaft into the motor housing. Between the power output part and the motor housing an annular air exit gap is formed through which the cooling air exits the motor housing. At least one guide vane that projects into the annular air exit gap is provided.