199 such as a zinc/chromium oxide mixture with a silicate together with a crvstalline aluminosilicate of specified aromatisation properties; and (c) a zinc oxide-chromium oxide composition together with a crystalline iron silicate of specified x-ray powder diffraction pattern. Self-Cleaning
Oven Lining
A self-cleaning lining for the removal of orsanic wastes from the inside of domestic ovens, patented by the Matsushita Electric Industrial CO. Ltd. (British Patent 1,592,118), consists of manganese oxide or cupric oxide supported on a glass frit carrier. Catalytic
Combustion
The SRCG of the RSC is to publish a news-letter under the editorship of Drs. Jim Cairns and Stanlev Affrossman. Details of the news-letter (and, indeed, membership of the group) are available from Dr. J. A. Cairns, Soecial Processing Group, Building 429; AERE Harwell, Didcot, Oxfordshire, OX11 ORA, or from the Secretarv of the croup, Professor P. B. Wells, Department of Chemistrv. Universitv of Hull. Hull. Incidentally, congratula-HU6 7RX. tions are due to Peter Wells on his recent promotion to a Personal Chair.
for Space Heating
In an article in the International Journal of Hydrogen Energy (6(1981)389), J. Mercia, E. Grecu and T. Fodar have described experiments on space heating using the catalytic combustion of H2 with atmospheric 02 on platinum and oxide catalyst pads. They examined the heating rates and the rates of depletion of oxygen and of production of steam. The results showed that the method has considerable potential for the heating of any size of space and that it is comparable with conventional systems; the depletion of atmospheric oxygen was not unacceptable. Because of the-levels of water vapour produced, the device is not suitable for heatins homes or closed working places, because of the continuous or periodical forced air flow which is necessary, but it is suitable for use in greenhouses. Reactive
The Surface Reactivity and Catalysis Group of the Royal Society of &emlstry
Polymers
Elsevier have announced that they intend to publish in 1982 a new journal of this title, to be edited by Professor F. G. Helfferich, of Pennsvlvania State Universitv. It will cover-all aspects of modification of fluid composition through interaction with both organic and inorganic polymeric substances and will include topics such as fixed enzymes and catalysis as well as more obvious topics such as ion exchange and water treatment. The aim is to bridge the gap between people involved in the synthesis of new materials and those who are concerned with practical applications. Further details are available from Elsevier.
A New ZSM Zeolite
from Mobil
Mobil Oil Corporation have disclosed (US Patent 4,287,166) a new zeolite, ZSM-39, with the composition (O-2.5) M20: (O-25) Al2O3: lOOSiO2 together with, optionally, Co,Cr,Mn,Pt or Pd. Hydrocarbon
W,V,Mo,Re,Ni,
Hydroconversion
The Shell Oil Company have patented (US Patent 4,279,778) a new catalyst consisting of an alumina-tungsten coprecipitate which is then impregnated with nickel and sulphided and fluorided. The catalyst is used for the hydroconversion of hydrocarbons. Another material for the same purpose has been claimed by the Exxon Research and Engineering Company (US Patent 4,276,201); this consists of an agglomerated alumina with up to 10% silica supporting molybdenum and tungsten oxide (or sulphide) and the oxides (or sulphides) of nickel or cobalt. New Books in Catalysis Subjects
and Related
The latest issue of "Advances in Catalysis" (edited by D. D. Eley, H. Pines and P. B. Weisz) was published by Academic Press in November 1981. The Articles include one by the late Professor Francois Gault on the skeletal isomerisation of hydrocarbons on metals as well as others by F. J. Berry (alntimony oxide catalysts), R. K.