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Bonded Metal Oxide Catalysts Support
389
ium (O.l-10%) and iron (O.l-5%) (BASF, U.S. Patent 4,465,787); and a catalyst consisting of a faujasite zeolite supporting ruthenium and impregnated with borane for the production of paraffins from synthesis gas (Shell Oil (Source: co., U.S. Patent, 4,466,907), Catalysts in Chemistry, 16 (1984); see also the following item).
Bonded
Metal
Oxide
Catalyst
Supports
A patent (European Patent 122,644 (1984)) to Shell International Research describes a ruthenium-containing catalyst suitable for methanation of synthesis gas. This is made by treating an alumina or silica with a slurry of a hydride of magnesium, barium or zirconium to form an oxide-bonded alumina/silica material suitable as a support. The ruthenium-containing methanation catalyst is made by impregnation of these surface-bonded oxides. (Source: Catalysts in Chemistry, 16 (1984) 196.)
Catalysis Reaction
of the Water-Gas
Volume 13 No. 2 -January
Acetylation
of Alcohols
An article by G. Posner and M. Oda in Tetrahedron Letters (22 (1981) 5003) reported in ChemTech (Dec.1983, p.710) describes a simple and convenient method giving selective acetylation of alcohols with high yield (42-82%). The esterification affects only the primary alcohol function in cases when both primary and secondary hydroxyl groups are present in the same molecule. The procedure involves stirring a solution of the alcohol in ethyl acetate over chromatographic gradg neutral alumina and heating to 75-80 C. Reaction times depend on the nature of the starting material. While use of ethyl acetate yields the corresponding acetates, ethyl propionate or methylbenzoate give respectively the corresponding propionates or benzoates. Phenols do not react and the same applies to aliphatic amines. However, aromatic primary amines give high yields of acetamides, ArNHAc.
E.V. Xurphree Award in Industrial Engineering Chemistry
Shift
A report in Chemical and Engineering News of Sept.10, (1984), p. 36, describes work presented by D.C. Elliott at the A.C.S. Division of Fuel Chemistry meeting concerning a new method of carrying out the water-gas shift reaction. This reaction has assumed a new importance over the last few years as a means of adjusting the synthesis gas compositions from a variety of gasifiers. Traditional reactors use either iron-chromium catalysts at temperatures up to 450°C or the newer type of catalyst based on cop er and zinc which operate as low as 8 200 C. The system investigated by Elliott and his colleagues is based on the use of aqueous solutions containing 6% sodium carbonate, the processing being carried out at 250-350°C and at pressures from 500 to 2500 psig. Among other advantages claimed for the system is a considerable potential saving in gas treatment; laboratory data have shown that the catalyst system will remove considerable sulphur and results in the gasification of tars. The process will be likely to be of most advantage in systems producing synthesis gas at high pressures.
apBHedealalysis -
Selective
1985
and
The E.V. Murphree award this year has been made to Professor Michel Boudart for his work on the the theory and interpretation of heterogeneous catalysis. Born in Brussels in 1924, Boudart studied chemical engineering at the University of Louvain before moving to the United States where he obtained his Ph.D. under the supervision of Sir Hugh Taylor in Princeton in 1950. He then joined the Princeton faculty, moving to the University of California, Berkeley, in 1965 and then to Stanford University in 1968. He is a co-founder of Catalytica Associates, a research company in catalysis. An article in Chemical and Engineering News (Oct.1, (1984) p.33) in reporting the award also gives further details of Professor Boudart's scientific achievements.
Polymer
Production
in Spain
It has been reported in Oil and Gas J (April 23 (1984) p.67) that Spain's state-owned Alcudia SA plans to increase its polypropylene capacity by
25%. Its
current
capacity
is higher
than that of the other Spanish manufacturer, Tarragoa Quimica, a subsidiary
ium (O.l-10%) and iron (O.l-5%) (BASF, U.S. Patent 4,465,787); and a catalyst consisting of a faujasite zeolite supporting ruthenium and impregnated with borane for the production of paraffins from synthesis gas (Shell Oil (Source: co., U.S. Patent, 4,466,907), Catalysts in Chemistry, 16 (1984); see also the following item).
Bonded
Metal
Oxide
Catalyst
Supports
A patent (European Patent 122,644 (1984)) to Shell International Research describes a ruthenium-containing catalyst suitable for methanation of synthesis gas. This is made by treating an alumina or silica with a slurry of a hydride of magnesium, barium or zirconium to form an oxide-bonded alumina/silica material suitable as a support. The ruthenium-containing methanation catalyst is made by impregnation of these surface-bonded oxides. (Source: Catalysts in Chemistry, 16 (1984) 196.)
Catalysis Reaction
of the Water-Gas
Volume 13 No. 2 -January
Acetylation
of Alcohols
An article by G. Posner and M. Oda in Tetrahedron Letters (22 (1981) 5003) reported in ChemTech (Dec.1983, p.710) describes a simple and convenient method giving selective acetylation of alcohols with high yield (42-82%). The esterification affects only the primary alcohol function in cases when both primary and secondary hydroxyl groups are present in the same molecule. The procedure involves stirring a solution of the alcohol in ethyl acetate over chromatographic gradg neutral alumina and heating to 75-80 C. Reaction times depend on the nature of the starting material. While use of ethyl acetate yields the corresponding acetates, ethyl propionate or methylbenzoate give respectively the corresponding propionates or benzoates. Phenols do not react and the same applies to aliphatic amines. However, aromatic primary amines give high yields of acetamides, ArNHAc.
E.V. Xurphree Award in Industrial Engineering Chemistry
Shift
A report in Chemical and Engineering News of Sept.10, (1984), p. 36, describes work presented by D.C. Elliott at the A.C.S. Division of Fuel Chemistry meeting concerning a new method of carrying out the water-gas shift reaction. This reaction has assumed a new importance over the last few years as a means of adjusting the synthesis gas compositions from a variety of gasifiers. Traditional reactors use either iron-chromium catalysts at temperatures up to 450°C or the newer type of catalyst based on cop er and zinc which operate as low as 8 200 C. The system investigated by Elliott and his colleagues is based on the use of aqueous solutions containing 6% sodium carbonate, the processing being carried out at 250-350°C and at pressures from 500 to 2500 psig. Among other advantages claimed for the system is a considerable potential saving in gas treatment; laboratory data have shown that the catalyst system will remove considerable sulphur and results in the gasification of tars. The process will be likely to be of most advantage in systems producing synthesis gas at high pressures.
apBHedealalysis -
Selective
1985
and
The E.V. Murphree award this year has been made to Professor Michel Boudart for his work on the the theory and interpretation of heterogeneous catalysis. Born in Brussels in 1924, Boudart studied chemical engineering at the University of Louvain before moving to the United States where he obtained his Ph.D. under the supervision of Sir Hugh Taylor in Princeton in 1950. He then joined the Princeton faculty, moving to the University of California, Berkeley, in 1965 and then to Stanford University in 1968. He is a co-founder of Catalytica Associates, a research company in catalysis. An article in Chemical and Engineering News (Oct.1, (1984) p.33) in reporting the award also gives further details of Professor Boudart's scientific achievements.
Polymer
Production
in Spain
It has been reported in Oil and Gas J (April 23 (1984) p.67) that Spain's state-owned Alcudia SA plans to increase its polypropylene capacity by
25%. Its
current
capacity
is higher
than that of the other Spanish manufacturer, Tarragoa Quimica, a subsidiary