- Email: [email protected]
Methane conversion to hydrocarbon
371 from motor vehicles), new process techI new processing methods, and applications in sensors. Further details can be obtained from the Royal Society of Chemistry, at the address given in the Calendar.
nology
Third Generation Polypropylene Catalyst Although somewhat older than normal, the following may be of interest to readers. N. Kashiwa and H. Koda in Xagaku Kogaku, 49 (1985) 365 describe the development of the third generation by polypropylene catalyst developed Mitsui Petrochemical Industries and Montedison. The catalyst possesses ultra-high activity ( 1OOOg polymer/m-mole Ti hr atm) and high stereoregularity for the gas-phase polymerization of propylene at 1,000 times that of the catalyst discovered by Natta. The process produces a granular polymer with extremely narrow particle-size distribution which offers an improved processing advantage over older catalysts. A key part of the catalyst is the addition of an electron donor, ethylbenzoate, to the MgC12/TiC14 catalyst.
A New Use for Zeolites
A recent U.S. patent by C.B. Frost, No. 4518718, 1985, describes the use of zeolites in polyurethane foams. A rigid polyurethane foam was prepared containing 50X 13X zeolite. The zeolite within the foam still retains adsorptive properties for water, flame retardants, etc. The zeolite is loaded with catalysts after the foam is formed. Frost reports that these foams display improved heat distortion properties, reinforcement capability, thermal resistance, and adhesive strength.
CALENDAR
European Workshop on Catalytic Methane Conversion A workshop on this topic will be held in Bochum, West Germany, on May 2nd and 3rd next year. The intention is to bring together European scientists working in this field to discuss their results and ideas. The attendance at the workshop maximum that limited so will be contact between the participants can occur. The papers presented at the workshop will probably be published in Catalysis Today. The organisers of the meeting are Professors Manfred Bearns (Bochum), Kees van der Wiele (Eindhoven) (Enschede). Anyone and Julian Ross wishing to ma!;ea contribution at the workshop should send,a short abstract, before 1st November, to Professor Baerns at the address given in the Calendar. Methane Conversion to Hydrocarbons
A recent article by P.A. Yarlagadda, N.K. Hunter et al., in Fuel Sci. Technol. Int. 5 (No. 2) (1987) 169 describes a direct, catalytic conversion of methane to higher hydrocarbons. Methane and 0 (93:6) were heated to 420°C in the f&St stage of the reactor to form methanol and then over a second section of HZSM-5 at 375'C (2.2 MPa) to obtain 11% C with 30% selectivity to C2+ hydrocarbons.
Niobic Acid Kozo Tanabe in Materials Chemistry and Physics 17 (1987) 217-225 has described the use of niobic acid as an unusual solid acid material. Even with a considerable amount of water, it shows high surface acidity (corresponding to ~~~pe~e"i~al'an~ecat~~~~~~ur~~hav~~~fa~~ niobic acid are summarized.
OF FORTHCOMING EVENTS
1987 November 16-18, Third Workshop on Louvain-la-Neuve, Hydrodesulphurisation Belgium
mm
-
Volume 34 No. l-2
-October
Contact: Dr. P. Grange, Catalyse et Chimie des Materiaux Divises (CATA), Place Croix du Sud, 1, B-1348 Louvain-la-Neuve, Belgium
1987
nology
Third Generation Polypropylene Catalyst Although somewhat older than normal, the following may be of interest to readers. N. Kashiwa and H. Koda in Xagaku Kogaku, 49 (1985) 365 describe the development of the third generation by polypropylene catalyst developed Mitsui Petrochemical Industries and Montedison. The catalyst possesses ultra-high activity ( 1OOOg polymer/m-mole Ti hr atm) and high stereoregularity for the gas-phase polymerization of propylene at 1,000 times that of the catalyst discovered by Natta. The process produces a granular polymer with extremely narrow particle-size distribution which offers an improved processing advantage over older catalysts. A key part of the catalyst is the addition of an electron donor, ethylbenzoate, to the MgC12/TiC14 catalyst.
A New Use for Zeolites
A recent U.S. patent by C.B. Frost, No. 4518718, 1985, describes the use of zeolites in polyurethane foams. A rigid polyurethane foam was prepared containing 50X 13X zeolite. The zeolite within the foam still retains adsorptive properties for water, flame retardants, etc. The zeolite is loaded with catalysts after the foam is formed. Frost reports that these foams display improved heat distortion properties, reinforcement capability, thermal resistance, and adhesive strength.
CALENDAR
European Workshop on Catalytic Methane Conversion A workshop on this topic will be held in Bochum, West Germany, on May 2nd and 3rd next year. The intention is to bring together European scientists working in this field to discuss their results and ideas. The attendance at the workshop maximum that limited so will be contact between the participants can occur. The papers presented at the workshop will probably be published in Catalysis Today. The organisers of the meeting are Professors Manfred Bearns (Bochum), Kees van der Wiele (Eindhoven) (Enschede). Anyone and Julian Ross wishing to ma!;ea contribution at the workshop should send,a short abstract, before 1st November, to Professor Baerns at the address given in the Calendar. Methane Conversion to Hydrocarbons
A recent article by P.A. Yarlagadda, N.K. Hunter et al., in Fuel Sci. Technol. Int. 5 (No. 2) (1987) 169 describes a direct, catalytic conversion of methane to higher hydrocarbons. Methane and 0 (93:6) were heated to 420°C in the f&St stage of the reactor to form methanol and then over a second section of HZSM-5 at 375'C (2.2 MPa) to obtain 11% C with 30% selectivity to C2+ hydrocarbons.
Niobic Acid Kozo Tanabe in Materials Chemistry and Physics 17 (1987) 217-225 has described the use of niobic acid as an unusual solid acid material. Even with a considerable amount of water, it shows high surface acidity (corresponding to ~~~pe~e"i~al'an~ecat~~~~~~ur~~hav~~~fa~~ niobic acid are summarized.
OF FORTHCOMING EVENTS
1987 November 16-18, Third Workshop on Louvain-la-Neuve, Hydrodesulphurisation Belgium
mm
-
Volume 34 No. l-2
-October
Contact: Dr. P. Grange, Catalyse et Chimie des Materiaux Divises (CATA), Place Croix du Sud, 1, B-1348 Louvain-la-Neuve, Belgium
1987