INFLUENCE OF BENZENE ON THE PROCESS OF n
... impact. Combustion of motor fuels creates harmful carbon, nitrogen and sulphur compounds which are emitted into the atmosphere. For that reason current regulations and forthcoming ones will require even more reductions in content of unwanted compounds in fuels combusting in petrol and diesel engines ...
... impact. Combustion of motor fuels creates harmful carbon, nitrogen and sulphur compounds which are emitted into the atmosphere. For that reason current regulations and forthcoming ones will require even more reductions in content of unwanted compounds in fuels combusting in petrol and diesel engines ...
Effect of Potassium on Sol-Gel Cerium and Lanthanum Oxide
... Therefore, the catalysts used in the catalytic combustion of soot must be capable of presenting catalyst activity at low temperatures [10]. An important number of catalytic formulations have been developed in this field, including oxides [11]-[14], perovskites [9] [15]-[17], spinels [18] and metals ...
... Therefore, the catalysts used in the catalytic combustion of soot must be capable of presenting catalyst activity at low temperatures [10]. An important number of catalytic formulations have been developed in this field, including oxides [11]-[14], perovskites [9] [15]-[17], spinels [18] and metals ...
asian journal of chemistry asian journal of chemistry
... of low heat transfer and easy automation and incident power ...
... of low heat transfer and easy automation and incident power ...
친환경 촉매 Iron (III) phosphate: 실온/무용매 반응조건에서 알코올과
... Also, isoamyl acetate is a kind of flavor reagent with fruit taste. It is traditionally prepared with H2SO4 as catalyst.7 The use of H2SO4 often causes the problems such as corrosion for equipments and pollution for environment. Until now, the tried replaces include FeCl3, CuSO4, ferric tri-dodecane ...
... Also, isoamyl acetate is a kind of flavor reagent with fruit taste. It is traditionally prepared with H2SO4 as catalyst.7 The use of H2SO4 often causes the problems such as corrosion for equipments and pollution for environment. Until now, the tried replaces include FeCl3, CuSO4, ferric tri-dodecane ...
Chemical Technology - Engineers Institute of India
... 3. Hot gases at 1,300ºC move through a high pressure heat recovery boiler section (70 atm, steam) cooling to 300ºC. Dust is separated by electrostatic precipitation. 4. The first step in combined S recovery is done in a high temperature catalytic reactor where carbon compounds with S are eliminated. ...
... 3. Hot gases at 1,300ºC move through a high pressure heat recovery boiler section (70 atm, steam) cooling to 300ºC. Dust is separated by electrostatic precipitation. 4. The first step in combined S recovery is done in a high temperature catalytic reactor where carbon compounds with S are eliminated. ...
Document
... to surfaces and interfaces. When pretreated crude oil is mixed with wash water and enters the desalter, it is chemically poised for fast and efficient emulsion resolution. A proper pretreatment program reduces the amount of demulsifier applied at the desalter in direct proportion to the amount added ...
... to surfaces and interfaces. When pretreated crude oil is mixed with wash water and enters the desalter, it is chemically poised for fast and efficient emulsion resolution. A proper pretreatment program reduces the amount of demulsifier applied at the desalter in direct proportion to the amount added ...
CHEMISTRY A
... (e) Some scientists believe that increased CO2 levels arising from the combustion of hydrocarbons lead to global warming because CO2 is a greenhouse gas. Carbon capture and storage, CCS, is being developed as a method for removing CO2 produced by combustion. (i) ...
... (e) Some scientists believe that increased CO2 levels arising from the combustion of hydrocarbons lead to global warming because CO2 is a greenhouse gas. Carbon capture and storage, CCS, is being developed as a method for removing CO2 produced by combustion. (i) ...
15anespp
... • leaded petrol must not pass through the catalyst as the lead deposits on the catalyst’s surface and “poisons” it, thus blocking sites for reactions to take place. ...
... • leaded petrol must not pass through the catalyst as the lead deposits on the catalyst’s surface and “poisons” it, thus blocking sites for reactions to take place. ...
Catalytic Synthesis of Organophosphorus Compounds from
... the syntheses of organophosphorus compounds becomes an urgent task. These increased environmental and commercial interests have prompted us to investigate “chlorine free” protocols for the direct conversion of a various low-valent phosphorus-containing compounds (including elemental (white and red) ...
... the syntheses of organophosphorus compounds becomes an urgent task. These increased environmental and commercial interests have prompted us to investigate “chlorine free” protocols for the direct conversion of a various low-valent phosphorus-containing compounds (including elemental (white and red) ...
Alcohols Oxidation by oxygen O2 in presence of
... identification of product type or products resulting from oxidation using thin-layer chromatography surfaces (TLC) having fluorescence indicators in (CF254)l max = 254 nm made in merk company has been studied and examined. So in certain time interval TLC was done in reaction mixture. After the termi ...
... identification of product type or products resulting from oxidation using thin-layer chromatography surfaces (TLC) having fluorescence indicators in (CF254)l max = 254 nm made in merk company has been studied and examined. So in certain time interval TLC was done in reaction mixture. After the termi ...
Document
... This reaction is carried out in two steps with intermediate heat removal. Initially, the process gas is passed through a bed of iron oxide/chromium oxide catalyst at 350 – 380 °C and then over a copper oxide/zinc oxide catalyst at approximately 200 – 220 °C. The final residual CO content of the gas ...
... This reaction is carried out in two steps with intermediate heat removal. Initially, the process gas is passed through a bed of iron oxide/chromium oxide catalyst at 350 – 380 °C and then over a copper oxide/zinc oxide catalyst at approximately 200 – 220 °C. The final residual CO content of the gas ...
Catalytic, Enantioselective Alkylation of r
... are almost unstudied in Lewis acid-catalyzed reactions,3 but are especially attractive imine substrates for the efficient syntheses of natural product precursors,4 pharmaceutically active compounds,5 and nonnatural amino acids;6 the last category has recently received much attention as peptidomimeti ...
... are almost unstudied in Lewis acid-catalyzed reactions,3 but are especially attractive imine substrates for the efficient syntheses of natural product precursors,4 pharmaceutically active compounds,5 and nonnatural amino acids;6 the last category has recently received much attention as peptidomimeti ...
Preparation of KOH/CaO/C Supported Biodiesel Catalyst and
... prepared under different conditions and applied to synthesize biodiesel. The synthesis conditions were: methanol-oil ratio was 9:1, catalyst dose was 1% of that of soybean oil, reaction temperature was 60˚C, reaction time was 4 h. The effects of C/CaO mass ratio on biodiesel yield were investigated ...
... prepared under different conditions and applied to synthesize biodiesel. The synthesis conditions were: methanol-oil ratio was 9:1, catalyst dose was 1% of that of soybean oil, reaction temperature was 60˚C, reaction time was 4 h. The effects of C/CaO mass ratio on biodiesel yield were investigated ...
New Dust Burner: Unique System Solution for Special Customer
... operating mode with a large control range can be realised without additional support firing. Of course, the basic requirements thereby are low pollutant emissions under all operating conditions. Again, Körting Hannover AG’s excellence is demonstrated and reinforced by a strong affiliated company, Ha ...
... operating mode with a large control range can be realised without additional support firing. Of course, the basic requirements thereby are low pollutant emissions under all operating conditions. Again, Körting Hannover AG’s excellence is demonstrated and reinforced by a strong affiliated company, Ha ...
Toluenediamine
... used directly for the further production of TDI. A separation of the 2,4- and 2,6-isomers is only carried out in minor amounts for special applications. For economic reasons it is preferable to use azeotropic or subazeotropic nitric acid (60–68 wt.%) instead of the more reactive but also more expens ...
... used directly for the further production of TDI. A separation of the 2,4- and 2,6-isomers is only carried out in minor amounts for special applications. For economic reasons it is preferable to use azeotropic or subazeotropic nitric acid (60–68 wt.%) instead of the more reactive but also more expens ...
kinetic characterisation of catalysts for methanol synthesis
... manufacture TMC-3/1 a catalyst with the composition of Cu (wt%) -50, ZnO (wt%)-25, Al2O3 (wt%)10%. It has the form of tablets with the dimensions of 3.5-4.5 mm. AlVIGO produces Cu/ZnO/Al2O3 called CHM-Y. The catalyst contains Cu (wt%) – 53; ZnO (wt%)-26, Al2O3 (wt%)-5.5%. The density of the catalyst ...
... manufacture TMC-3/1 a catalyst with the composition of Cu (wt%) -50, ZnO (wt%)-25, Al2O3 (wt%)10%. It has the form of tablets with the dimensions of 3.5-4.5 mm. AlVIGO produces Cu/ZnO/Al2O3 called CHM-Y. The catalyst contains Cu (wt%) – 53; ZnO (wt%)-26, Al2O3 (wt%)-5.5%. The density of the catalyst ...
A Straightforward Route to Enantiopure Pyrrolizidines and
... together with methanol (MeOH) can be produced from syngas by appropriate modification of MeOHsynthesis catalysts and the reaction conditions [16-25]. Over the catalysts in this category, a significant amount of isobutanol is often produced. In the 1970s and 1980s, researchers at Union Carbide Corpor ...
... together with methanol (MeOH) can be produced from syngas by appropriate modification of MeOHsynthesis catalysts and the reaction conditions [16-25]. Over the catalysts in this category, a significant amount of isobutanol is often produced. In the 1970s and 1980s, researchers at Union Carbide Corpor ...
CONVERSION OF NITROGEN OXIDES AND AROMATIC VOLATILE
... SCR-DeNOx (0.53 % wt. V2O5) commercial catalyst Study regarding the behaviour of nitrogen oxides in selective reduction reaction, in the presence of ammonia, on SCR-DeNOx (0.53 % wt. V2O5) commercial catalyst resulted in conclusions that the value of NOx conversion depends on the ratio NH3/NOx and i ...
... SCR-DeNOx (0.53 % wt. V2O5) commercial catalyst Study regarding the behaviour of nitrogen oxides in selective reduction reaction, in the presence of ammonia, on SCR-DeNOx (0.53 % wt. V2O5) commercial catalyst resulted in conclusions that the value of NOx conversion depends on the ratio NH3/NOx and i ...
in a Chemical Reactor - Max-Planck
... multitude of methods used to isolate a product out of a reaction mixture and clean it. This is necessary because a chemical reaction rarely delivers the desired compound exclusively. Quite apart from this, reaction mixtures often contain catalysts or other additives, and the solvents in which most r ...
... multitude of methods used to isolate a product out of a reaction mixture and clean it. This is necessary because a chemical reaction rarely delivers the desired compound exclusively. Quite apart from this, reaction mixtures often contain catalysts or other additives, and the solvents in which most r ...
1 Introduction
... and/or transporting these highly toxic reagents is problematic. To understand this better, let us look at two examples: hydrogen-powered fuel cells and oxidation of propene to propene oxide. Hydrogen-powered fuel cells are a hot topic. In principle, such fuel cells can provide us with energy, whil ...
... and/or transporting these highly toxic reagents is problematic. To understand this better, let us look at two examples: hydrogen-powered fuel cells and oxidation of propene to propene oxide. Hydrogen-powered fuel cells are a hot topic. In principle, such fuel cells can provide us with energy, whil ...
pdfInt 2 Homework Unit 2 1 MB
... alkynes. Ethyne has the following structure. H – CC – H All the members of the alkyne series have a triple carbon to carbon bond. Draw and complete the table below. Position in series Name ...
... alkynes. Ethyne has the following structure. H – CC – H All the members of the alkyne series have a triple carbon to carbon bond. Draw and complete the table below. Position in series Name ...
Homogeneous and Heterogeneous Catalysis
... Nitrogen is a strong limiting nutrient in plant growth. Carbon and oxygen are also critical, but are easily obtained by plants from soil and air. Even though air is 78% nitrogen, atmospheric nitrogen is nutritionally unavailable because nitrogen molecules are held together by strong triple bonds. Ni ...
... Nitrogen is a strong limiting nutrient in plant growth. Carbon and oxygen are also critical, but are easily obtained by plants from soil and air. Even though air is 78% nitrogen, atmospheric nitrogen is nutritionally unavailable because nitrogen molecules are held together by strong triple bonds. Ni ...
Organic and Biochem
... and found to have antibiotic (kills bacteria) properties. However, the demand for penicillin soon outgrew the ability to get it from fungi and organic chemists figured out how to synthesize penicillin in the lab. ...
... and found to have antibiotic (kills bacteria) properties. However, the demand for penicillin soon outgrew the ability to get it from fungi and organic chemists figured out how to synthesize penicillin in the lab. ...
File
... Lesson 2.4: Combustion Reactions In some areas of the Arctic, large amounts of methane, CH4 (g) are entering the atmosphere. Where is it coming from? As the climate becomes warmer and the ground thaws bacteria produce methane from the remains of dead plants and animals. How do scientists find the me ...
... Lesson 2.4: Combustion Reactions In some areas of the Arctic, large amounts of methane, CH4 (g) are entering the atmosphere. Where is it coming from? As the climate becomes warmer and the ground thaws bacteria produce methane from the remains of dead plants and animals. How do scientists find the me ...
Direct production of hydrogen peroxide from CO, O2, and H2O over
... Table 1 shows the catalytic results for H2O2 production from CO/O2/H2O over several types of metal nanoparticles dispersed on alumina prepared by the wet reduction (WR) method, which has recently been shown to be an effective method for the preparation of various amorphous alloy catalysts for versati ...
... Table 1 shows the catalytic results for H2O2 production from CO/O2/H2O over several types of metal nanoparticles dispersed on alumina prepared by the wet reduction (WR) method, which has recently been shown to be an effective method for the preparation of various amorphous alloy catalysts for versati ...
Fluid catalytic cracking
Fluid catalytic cracking (FCC) is one of the most important conversion processes used in petroleum refineries. It is widely used to convert the high-boiling, high-molecular weight hydrocarbon fractions of petroleum crude oils to more valuable gasoline, olefinic gases, and other products. Cracking of petroleum hydrocarbons was originally done by thermal cracking, which has been almost completely replaced by catalytic cracking because it produces more gasoline with a higher octane rating. It also produces byproduct gases that are more olefinic, and hence more valuable, than those produced by thermal cracking.The feedstock to an FCC is usually that portion of the crude oil that has an initial boiling point of 340 °C or higher at atmospheric pressure and an average molecular weight ranging from about 200 to 600 or higher. This portion of crude oil is often referred to as heavy gas oil or vacuum gas oil (HVGO). The FCC process vaporizes and breaks the long-chain molecules of the high-boiling hydrocarbon liquids into much shorter molecules by contacting the feedstock, at high temperature and moderate pressure, with a fluidized powdered catalyst.