Design principles a heterogeneously catalyzed autothermal reactor with enhanced heat and mass transfer for hydrogen production Junjie Chen Department of Energy and Power Engineering, School of Mechanical and Power Engineering, Henan Polytechnic University, 2000 Century Avenue, Jiaozuo, Henan, 454000, P.R. China Contributor: Junjie Chen, ORCID: 0000-0001-5055-4309, E-mail address: komcjj@gmail.com Catalysis, in chemistry, is the modification of the rate of a chemical reaction, usually an acceleration, by addition of a substance not consumed during the reaction. The rates of chemical reactions, that is, the velocities at which they occur, depend upon a number of factors, including the chemical nature of the reacting species and the external conditions to which they are exposed. A particular phenomenon associated with the rates of chemical reactions that is of great theoretical and practical interest is catalysis, the acceleration of chemical reactions by substances not consumed in the reactions themselves, substances known as catalysts. The study of catalysis is of interest theoretically because of what it reveals about the fundamental nature of chemical reactions; in practice, the study of catalysis is important because many industrial processes depend upon catalysts for their success. In a catalyzed reaction, the catalyst generally enters into chemical combination with the reactants but is ultimately regenerated, so the amount of catalyst remains unchanged. Since the catalyst is not consumed, each catalyst molecule may induce the transformation of many molecules of reactants. For an active catalyst, the number of molecules transformed per minute by one molecule of catalyst may be as large as several million. Where a given substance or a combination of substances undergoes two or more simultaneous reactions that yield different products, the distribution of products may be influenced by the use of a catalyst that selectively accelerates one reaction relative to the other(s). By choosing the appropriate catalyst, a particular reaction can be made to occur to the extent of practically excluding another. Many important applications of catalysis are based on selectivity of this kind. Streamwise distance (millimeters), Reforming channel centerline temperature (degrees kelvin) 0 373 0.00025 373.048742 0.0005 373.2382942 0.00075 373.7354626 0.001 374.7081362 0.00125 376.2548823 0.0015 378.3951976 0.00175 381.0814232 0.002 384.2247405 0.00225 387.7222496 0.0025 391.465635 0.00275 395.3617454 0.003 399.3347598 0.00325 403.3218552 0.0035 407.2775391 0.00375 411.1628179 0.004 414.9538621 0.00425 418.6311751 0.0045 422.1828419 0.00475 425.6012807 0.005 428.8821587 0.00525 432.025476 0.0055 435.0312325 0.00575 437.9015946 0.006 440.6398117 0.00625 443.2502165 0.0065 445.7371415 0.00675 448.1049195 0.007 450.3600492 0.00725 452.5057803 0.0075 454.5475284 0.00775 456.4896262 0.008 458.3374895 0.00825 460.0954509 0.0085 461.7689261 0.00875 463.3600816 0.009 464.874333 0.00925 466.3149298 0.0095 467.6862047 0.00975 468.9924902 0.01 470.2348696 0.01025 471.4176754 0.0105 472.5441571 0.01075 473.6175642 0.011 474.6389798 0.01125 475.6138198 0.0115 476.5431672 0.01175 477.4302716 0.012 478.276216 0.01225 479.0831669 0.0125 479.8543736 0.01275 480.5909193 0.013 481.2938872 0.01325 481.9665268 0.0135 482.6099212 0.01375 483.2251535 0.014 483.8143901 0.01425 484.377631 0.0145 484.9170424 0.01475 485.4347907 0.015 485.930876 0.01525 486.4063812 0.0155 486.8623897 0.01575 487.3010677 0.016 487.721332 0.01625 488.1264322 0.0165 488.515285 0.01675 488.8889736 0.017 489.2496644 0.01725 489.5962742 0.0175 489.9309692 0.01775 490.2526664 0.018 490.5646152 0.01825 490.8646493 0.0185 491.1560181 0.01875 491.4365554 0.019 491.7073443 0.01925 491.970551 0.0195 492.2250926 0.01975 492.472052 0.02 492.7114294 0.02025 492.9432247 0.0205 493.1696042 0.02075 493.3884016 0.021 493.6017832 0.02125 493.8086659 0.0215 &nbsp

Contributor: Junjie Chen, ORCID: 0000-0001-5055-4309, E-mail address: komcjj@gmail.com, Department of Energy and Power Engineering, School of Mechanical and Power Engineering, Henan Polytechnic University, 2000 Century Avenue, Jiaozuo, Henan, 454000, P.R. China