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By Crucq, A.; Frennet, A.

In July 1988, a global Catalysis Seminar used to be held to mark the thirtieth anniversary of the Catalysis Society of Japan. After the ninth overseas Congress on Catalysis in Calgary, approximately 25 jap researchers engaged on catalysis visited and held seminars in 4 nations. every one seminar desirous about a particular topic, but additionally lined quite a lot of issues in catalysis, from the basic to the economic levels. This quantity, containing the lawsuits of this distinctive occasion, displays the profitable means within which the seminars supplied a chance for direct communique and dialogue of the way top to accomplish the profitable layout of catalysts.

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This results all too often in action whose primary function appears to be to satisfy the political need, to be seen to be "doing something". Realistic evaluation and assessment of the potential effectiveness of the "something" and of its benefit is rarely feasible before implementation, and resulting benefits are difficult to identify. It is accepted that governments have an obligation to serve broad national and international needs on complex environmental matters and act as clearing houses for ideas and programmes.

Ministere des Travaux Publics, Bruxelles, 342 pp. This Page Intentionally Left Blank A. \. , Amsterdam - Printed in The Ne therl ands CATALYSIS IN MODERN PETROLEUM REFINING by J. GROOTJANS LABOFINA SA, Feluy, Belgium. ABSTRACT The progressive lead phase out in motorspirits, deeper conversion schemes on crudes of poorer quality and more stringent regulations on polluant emissions determine to a large extent the ongoing research in catalysis related to petroleum refining. From the inspection of the gasoline pool of a conversion type refinery, it is clear that major contributions with respect to octane optimization, may be expected from the fluid catalytic cracker and the downstream upgrading of its products.

3. Lead deposition in towns Streets, avenues and parks are heavily contaminated by the exhaust gases of cars. Grasses in lawns contain more than 150 ppm of lead. Shrubs and ornamental trees are important sinks for the aerial lead and may accumulate other heavy metals on their leaves (Impens et aI1972). In busy avenues, the street dust has a lead content ranging from 500 ppm to 2 500 ppm and plani screens are effective to reduce the lead burden in gardens. Some similar results were obtained in British cities (Davies 1978).

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