III International Conference

CATALYTIC ACTIVATION OF UNFAVOURABLE REACTIONS BYM,ReO x /Al 2 O 3 CATALYSTSPP-II-1Abasov S.I., Babayeva F.A., Rustamov M.I.Institute of Petrochemical Processes, National Academy of Sciences of Azerbaijan,Baku, AzerbaijanE-mail: feridan@rambler.ruIntroduction.The possibility of the non oxidative catalytic dehydrocyclohexamerization (DHCH) ofmethane into benzene, the low-temperature dehydroalkylation (LTDHAB) of benzene bypropane and low temperature dehydrogenation (LTDH) of propane into propene withparticipation of non-reduced metalaluminorhenium catalysts have been studied earlier by us[1-4]. In the case of M,ReO x /Al 2 O 3 catalysts the source of bound oxygen is a supported Reoxide. The reactivity of oxygen bound with Re can be connected with M. In this case, thenature of M interaction with rhenium in M,ReO x /Al 2 O 3 is of a special importance forproceeding of above reactions.Hence, the aim of the present work is to show influence of M on reactivity of oxygenbound with rhenium.Experimental.The studying objects were M,ReO x /Al 2 O 3 catalysts prepared by adsorption (a) andimpregnation (i) methods. For comparison the catalysts containing only one supportedcomponent - M or Re were prepared by analogous procedure. M and rhenium content in thecatalysts prepared were 0.3-0.5 wt %, respectively. The M average particle size wasdetermined by chemisorption and electron microscopic data, and the state of supported metalswas characterized by diffuse reflection IR spectroscopic method using CO as a molecularprobe. Catalyst tests were carried out in fixed bed flow quartz reactor at atmospheric pressureGHSV (gas hourly space velocity) 1450 h -1 , temperature 650 o C. The reaction products wereanalyzed by gas chromatograph.Results and discussion.The investigations carried out show that only M,ReO x /Al 2 O 3 (a) samples prepared byadsorption method are able to convert efficiently methane into benzene and carry out the otherreactions. Benzene formation begins at the fifth minute of the experiment and its yield159