Hydrogen Production Through Pyrolysis

Abstract

Hydrogen Production Through Pyrolysis, Table 1 Properties of hydrogen (Adopted from [12, 14, 15]) Property Quantity Unit Critical point Critical temperature 33.24 K Critical pressure 1.297 Mpa Critical density 30.77 Kg.m À3 Compressibility factor 0.304-Gaseous Density 1.33 Kg.m À3 Compressibility factor 0.906-Enthalpy 1447.4 J.mol À1 Entropy 78.94 J.mol À1 .K À1 Constant pressure heat capacity 24.6 J.mol À1 .K À1 Constant volume heat capacity 13.2 J.mol À1 .K À1 Viscosity 1.11 Â 10 À3 mPa.s Thermal conductivity 16.5 Â 10 À3 W.m À1 .K À1 Liquid Normal boiling point 20 K Heat of vaporization 891.2 J.mol À1 Density 70.96 Kg.m À3 Compressibility factor 0.017-Enthalpy 548.3 J.mol À1 Entropy 34.92 J.mol À1 .K À1 Constant pressure heat capacity 19.7 J.mol À1 .K À1 Constant volume heat capacity 11.6 J.mol À1 .K À1 Viscosity 13.3 Â 10 À3 mPa.s Thermal conductivity 100 Â 10 À3 W.m À1 .K À1 Combustion Autoignition temperature 858 K Low heating value 119.9 kJ.g À1 High heating value 141.8 kJ.g À1 Diffusion coefficient in air at STP 0.61 cm 2 .s À1 Detonability limits in air 18.3-59 Volume % Limiting oxygen index 5 Volume % Flammability limits in air 4-75 Volume % Minimum energy of ignition in air 20 kJ Flame temperature in air 2318 K

Green synthesis of Size‐Controlled copper oxide nanoparticles as catalysts for H 2 production from industrial waste aluminum

“…[1][2][3][4][5][6] Tell now, more than 95% of hydrogen conversion technologies are energy-intensive, employ expensive and time-consuming processes, and release harmful pollution to our planet. 7,8 These conventional approaches are for example; steam reforming of natural gas, coal gasification, and oil refinery systems. 2 As a result, the research directions are now focused on predicting renewable and sustainable approaches for producing clean H 2 energy.…”

Converting Cyclohexanone to Liquid Fuel-Grade Products: A Characterization and Comparison Study of Hydrotreating Molybdenum Catalysts

“…Hence, it would be beneficial to assess and compare the heating values (HHV and LHV) of the products. To do [6]. Hence, the obtained product of cyclohexanone HDO over the assessed molybdenum-based catalysts can be then utilized as an energy resource.…”

“…The reduction of fossil sources, ascending global demand for energy carriers and chemicals, environmental defects, and climate change have caused such a concern [1][2][3][4]. In this regard, significant efforts for the production of energy carriers, as well as chemicals, from sustainable and renewable sources have been gaining momentum [4][5][6][7][8]. The main avenues to succeed in producing renewable and sustainable fuels and chemicals are based on the utilization of biomass.…”

Sensitivity Analysis and Multi‐Objective Optimization of Oxidative Dehydrogenation of Propane in a Fixed‐bed Reactor over Vanadium/Graphene for Propylene Production

“…A new approach for ethylene production is the simultaneous production of ethylene and hydrogen through carbon dioxide-assisted conversion of ethane [2,3]. Production of olefins from a biomass feedstock is of high interest nowadays, with hydro-deoxygenation or catalytic cracking of the bio-oil for its upgrading to olefins and gasolinetype fuel being the most effective route [4]. These olefins are important raw materials for the petrochemical industries.…”