Abstract: A catalyst containing platinum on carbon as carrier for the catalytic oxidation of glyoxal to glyoxalic acid. Activity and selectivity of the catalyst can be considerably improved by modification with molybdenum and/or cerium.

Abstract: Pressed parts based on pyrogenically produced titanium dioxide with the following physico-chemical characteristics:______________________________________ Outer diameter 0.8-15 mm BET surface according <1-20 m.sup.2 /g to DIN 66 131 Pore volume 0.01-0.29 cm.sup.3 /g Pore distribution no pores <10 nm at least 90% of the pores in a range of 10-80 nm Breaking strength 30-500 N/pressed part TiO.sub.2 phase rutile 100% Composition >99.5% TiO.sub.2 ______________________________________They are produced by mixing pyrogenically produced titanium dioxide with urea, graphite and water, compacting the mixture, optionally drying the resulting mass at 80.degree. C. to 120.degree. C. comminuting, subsequently extruding or tabletting to produce pressed parts and tempering the pressed parts at a temperature of 710.degree. C. to 1000.degree. C. for a period of 0.5 to 6 hours. The pressed parts can be used as catalyst or catalytic carrier.

Abstract: Metal-containing, shaped, polymeric, tertiary and/or secondary organosiloxane amine compounds are introduced which contain the metals Pd, Pt, Ru, Rh individually or in combination as well as optional promotors and/or moderators. The organosiloxane amine functioning as carrier for the metals contains the units ##STR1## and/or units ##STR2## in which R.sup.1 to R.sup.5 are a group ##STR3## with R.sup.6 as a double-bonded group bound to N and Si (e.g. an alkylene group) and X is an amine group such as The carrier substance can be cross-linked with cross-linking agents containing Si, Ti, Zr or Al. The metal-containing product is spherical in form and is defined by the parameters of sphere diameter, specific surface and pore volume as well as bulk density. A method of production is disclosed which can be carried out in several variants as well as the use of the metal-containing product as catalyst for hydrogenation reactions and oxidation reactions.

Abstract: Pressed parts based on pyrogenically produced titanium dioxide with the following physico-chemical characteristics:______________________________________ Outer diameter 0.8-15 mm BET surface according <1-20 m.sup.2 /g to DIN 66 131 Pore volume 0.01-0.29 cm.sup.3 /g Pore distribution no pores <10 nm at least 90% of the pores in a range of 10-80 nm Breaking strength 30-500 N/pressed part TiO.sub.2 phase rutile 100% Composition >99.5% TiO.sub.2 ______________________________________They are produced by mixing pyrogenically produced titanium dioxide with urea, graphite and water, compacting the mixture, optionally drying the resulting mass at 80.degree. C. to 120.degree. C. comminuting, subsequently extruding or tabletting to produce pressed parts and tempering the pressed parts at a temperature of 710.degree. C. to 1000.degree. C. for a period of 0.5 to 6 hours.The pressed parts can be used as catalyst or catalytic carrier.

Abstract: A carrier catalyst containing copper and alkali ions on an annular carrier of surface-active material is defined by the dimensions of the carrier body and the porosity of the finished catalyst. Its total pore volume is 0.6-1.0 ml/g, pores smaller than 4 nm diameter are not present, pores of 8-20 nm diameter constitute at least 80% of the total pore volume and the remainder consists of macropores with a diameter greater than 20 nm (i.e., up to 200 nanometers). The catalyst is suitable for the production of 1,2-dichloroethane by means of the oxychlorination of ethylene.

Abstract: A process for making gluconic acid and its alkali metal salts by oxidizing glucose with oxygen or oxygen containing gas in an aqueous alkaline solution in the presence of an activated charcoal supported catalyst containing a platinum group metal component, e.g. platinum and palladium and bismuth wherein the platinum, palladium and bismuth are simultaneously deposited on the charcoal support.

Abstract: Apparatus for the catalytic conversion of waste gases such as those which accumulate in the synthesis of vinyl chloride is presented in which the waste gases are successively treated at an elevated temperature with a catalyst for oxidative cracking and with a catalyst for oxidative afterburning.

Abstract: The use of hitherto known supported catalysts in chlorination processes and oxychlorination processes leads to high pressure drops and to the formation of hot spot temperatures in the reactor. When honeycomb monolithic catalyst supports provided with a multiplicity of channels open at both ends and parallel to the longitudinal axis are used, both the heat dissipation is improved and the pressure drops across the reactor are lowered drastically. This leads ultimately to an increase in the selectivity of the reaction and to a minimization of the combustion rate.

Abstract: Pressed parts based on pyrogenically produced silicon dioxide with the following physicochemical characteristic data:______________________________________ Outer diameter 2 to 15 mm BET surface 50 to 400 m.sup.2 /g Pore volume 0.6 to 1.3 ml/g Breaking strength 50-150 N Pore distribution no pores <5 mn diameter only meso and macropores Composition >99% by weight SiO.sub.2 Abrasion <1.0% Bulk weight: 400-500 g/l ______________________________________are produced by homogenizing pyrogenically produced silicon dioxide with urea, methyl cellulose and/or magnesium stearate, graphite and aluminum stearate with the addition of water, dried at a temperature of 80.degree. to 120.degree. C., comminuted to a powder, pressing the powder to pressed parts and tempering the pressed parts for a period of 0.5 to 8 hours at a temperature of 400.degree. to 1200.degree. C.

Abstract: Molded articles based on pyrogenically prepared silicon dioxide and having the following physical-chemical characteristic data:______________________________________ External diameter 2 to 15 mm BET surface area 50 to 400 m.sup.2 /g Total Pore volume 0.6 to 1.3 ml/g Crushing strength 40 to 120 N Pore size distribution no pores <5 nm in diameter, at least 80% in the range 5 to 40 nm in diameter Composition >95% by weight of SiO.sub.2 remainder Al.sub.2 O.sub.3. ______________________________________These products are produced by compacting pyrogenically prepared silicon dioxide with kaolin and/or graphite, sugar, starch, urea or wax with addition of water, drying the mixture at a temperature of from 80.degree. to 120.degree. C. and comminuting it to form a powder, pressing the powder to form the desired article, and tempering the articles at a temperature of from 400.degree. to 1200.degree. C. for a period of 0.5 to 6 hours. The molded bodies can be used as a catalyst support or catalyst.

Abstract: Molded articles based on pyrogenically prepared aluminum oxide and having the following physical-chemical characteristic data:______________________________________ External diameter: 2 to 15 mm BET surface area: 60 to 115 m.sup.2 /g Total Pore volume: 0.30 to 0.80 ml/g Crushing strength: 100 to 300N Pore size distribution: no pores < 5 nm in diameter, at least 80% in the range 10 to 40 nm in diameter Composition: 94 to 99% by weight of Al.sub.2 O.sub.3 remainder SiO.sub.2. ______________________________________They are produced by homogenizing pyrogenically prepared aluminum oxide with kaolin and/or graphite, urea, wax, sugar or starch with addition of water, drying the mixture at a temperature of from 80.degree. to 120.degree. C. and comminuting it to form a powder, pressing the powder to form a molded body, and tempering the molded body by heating at a temperature of from 400.degree. to 1200.degree. C. for a period of 0.5 to 6 hours. The molded articles can be used as a catalyst support or catalyst.

Abstract: Molded, or pressed articles on pyrogenically produced zirconium dioxide are disclosed and having the following features:______________________________________ outside diameter 2-15 mm BET surface area per DIN 66 131 30-50 m.sup.2 /g total pore volume 0.3-0.8 ml/g pore size distribution no pores < 10 nm, at least 80% of the pores in the range of 10-70 nm diameter crushing strength 40-300 N composition at least 98% ZrO.sub.2, SiO.sub.2, remainder Al.sub.2 O.sub.3, and/or HfO.sub.2. ______________________________________These molded articles are manufactured by homogenizing pyrogenically produced zirconium dioxide with any one of kaolin, sugar, or urea, or mixtures while water is being added, by drying the mixture at a temperature of 80.degree. to 120.degree. C. and then comminuting it into a friable powder which then is pressed into molded articles which thereupon are annealed for 1 to 4 h at 600.degree. to 1,000.degree. C. The pressed articles are used as catalysts or as catalyst-carriers.

Abstract: A molded; i.e. pressed, article based on a pyrogenically produced system of mixed oxides of silicon dioxide and aluminum oxide and having the following physical-chemical features:______________________________________ pellet diameters 2 to 15 mm BET surface area according to 90 to 200 m.sup.2 /g DIN 66131 pore volume 0.6 to 1.3 ml/g pore size distribution no pores with <5 nm diameters, at least 75% of the pores in the range of 5 to 40 nm crushing strength 30 to 120 N composition >75% by weight of SiO.sub.2, remainder Al.sub.2 O.sub.3 ______________________________________These molded articles are manufactured by homogenizing a pyrogenically produced system of mixed oxides of silicon dioxide and aluminum oxide with graphite and/or kaolin, urea, sugar, starch, glaze frit powder and/or microcrystalline wax while water is being added, by drying the mixture at a temperature between 80.degree. and 120.degree. C.

Abstract: The invention concerns pressed pellets based on pyrogenically produced titanium dioxide having the following properties:______________________________________ outside diameter 2 to 15 mm area according to BET surface 35 to 65 m.sup.2 /g DIN 66 131 Total pore volume 0.3 to 0.8 m.sup.3 /g crushing strength 40 to 300 N pore size distribution no pores <10 nm in diameter, at least 80% of the pores in the range of 10 to 70 nm diameter composition at least 94% by weight of TiO.sub.2 (predominantly, i.e. >50% by weight of anatase) remainder SiO.sub.2 and Al.sub.2 O.sub.3. ______________________________________They are made by mixing pyrogenically produced titanium with a foaming agent such as urea and with water, where called binder such as kaolin and also with a binder such as kaolin and also with a pelletizing accessory such as wax and by compacting the material which then is dried at a temperature of 80.degree. to 120.degree. C.

Abstract: A method for the catalytic conversion of waste gases such as those which accumulate in the synthesis of vinyl chloride is presented in which the waste gases are successively treated at an elevated temperature with a catalyst for oxidative cracking and with a catalyst for oxidative afterburning. Apparatus for carrying out the method is also shown.

Abstract: A catalyst for the production of hydrocarbon consists essentially of crystalline aluminum silicate, at least one compound of the metal zinc and/or cadmium and additionally silica. The catalyst is produced by heating a crystalline aluminum silicate, in a given case partially or completely converted to the hydrogen form, with a zinc and/or cadmium compound and molding with a silica containing binder.

Abstract: Alcohols and/or aliphatic ethers are converted to hydrocarbons employing catalysts consisting of crystalline aluminum silicate, a compound of zinc and/or cadmium and additional silica. The catalyst is produced by treating a crystalline aluminum silicate, in a given case, partially or completely converted into the hydrogen form with a zinc or cadmium compound and shaping with a silica containing binder.

Abstract: There is disclosed a process for the production of 1,4-bis-[3-(3,4,5-trimethoxybenzyloxy)-propyl]-diazepane which consists of first reacting 3-aminopropanol with acrylonitrile and subsequently reacting in aqueous solution with formaldehyde and hydrocyanic acid or with formaldehyde and an alkali cyanide in the presence of alkali hydrogen sulfite to form cyanomethyl-(2-cyano-ethyl)-(3-hydroxy-propyl)-amine; hydrogenating the thus obtained reaction product in the presence of a hydrogenating catalyst and ammonia to 1 (3-hydroxy-propyl)-1,4-diazepane and reacting the latter compound for example with 3-halogen propanol or with allyl alcohol and introducing two 3,4,5-trimethoxy-benzoyl groups into the thus obtained reaction product by esterification.

Abstract: A catalyst for the production of hydrocarbon consists essentially of crystalline aluminum silicate, at least one compound of the metal zinc and/or cadmium and additionally silica. The catalyst is produced by heating a crystalline aluminum silicate, in a given case partially or completely converted to the hydrogen form, with a zinc and/or cadmium compound and molding with a silica containing binder.

Abstract: .beta.-hydroxy-.alpha.-aminocarboxylic acids of the formula: ##STR1## where R.sub.1 and R.sub.2 are hydrogen or an alkyl group having 1 to 10 carbon atoms are produced by hydrogenating the correspondingly substituted cyanohydrin in a water containing medium first in the presence of a hydrogenation catalyst and an acid at a temperature between -10.degree. and +40.degree. C. and a hydrogen pressure of less than 10 bar, until per mole of cyanohydrogen employed one mole of hydrogen is taken up and then employing the solution obtained as starting material for a Strecker or Bucherer synthesis of an amino acid.