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Boreskov Institute of Catalysis of the Siberian Branch of Russian ...

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PP-I-10The analysis <strong>of</strong> <strong>the</strong> composition <strong>of</strong> <strong>the</strong> outlet gases at various temperatures and atdifferent contact times, has led to <strong>the</strong> assumption that <strong>the</strong> following reactions take place in <strong>the</strong>reactor:kCH 4 + O 2 ⎯⎯→1 HCHO+ H 2 O (1)kHCHO + O 2 ⎯⎯→2 CO 2 + H 2 O (2)kCH 4 + 2 O 2 ⎯⎯→3 CO 2 +2 H 2 O (3)The following reaction rate expressions have been suggested:rHCHO1N1CHN14ON 22HCHO N 2O2( p ) ( p ) − k ( p ) ( p )= k(4)CH 4O22HCHOO2CO22N 2 HCHO N 2ON2CH3OHN 3O2( p ) ( p ) k ( p ) ( p )r = k+(5)HCHOO23CH 3OHO2rO23N 3CHN 34ON12CH N14O2( p ) ( p ) − k ( p ) ( p )= −k(6)CH 4O21CH 4O2r x – <strong>the</strong> rate <strong>of</strong> generating <strong>the</strong> product xk i – <strong>the</strong> rate constant for <strong>the</strong> reaction i (k p – <strong>the</strong> pressure constant)p x – <strong>the</strong> partial pressure <strong>of</strong> <strong>the</strong> compound x at <strong>the</strong> reactor outletNi x – <strong>the</strong> order <strong>of</strong> reaction i with respect to reactant x.The reaction rate constants (k i ) and <strong>the</strong> order <strong>of</strong> <strong>the</strong> reaction (Ni x ) were determined by <strong>the</strong>Hooke-Jeeves method.References1. A. Parmaliana, F. Arena, J. Catal. 1997, 167, 57.2. A. Parmaliana, F. Arena, F. Frusteri, A. Martinez-Arias, M.L. Granados, J.L.G. Ferro, Appl. Catal. A, 2002,226, 163.3. V. Fornes, C. Lopez, H.H. Lopez, A. Martinez, Appl. Catal. A, 2003, 249, 345.4. H. Matsumura, K. Okumura, T. Shimamura, N. Ikenaga, T. Miyake, T. Suzuki, J. Mol. Catal. A, 2006, 250,122.5. B. Michalkiewicz, Appl. Catal., 2004, 277, 147.6. G. Du, S. Lim, Y. Yang, C. Wang, L. Pfefferle, G.L. Haller, Appl. Catal. A, 2006, 302, 48.7. B. Michalkiewicz, J. Sreńscek-Nazzal, P. Tabero, B. Grzmil, U. Narkiewicz, Chem. Pap., 2008, 62, 106.230

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