A catalyst for the conversion of at least one low carbon number aliphatic hydrocarbon in a feedstream to provide at least one aromatic hydrocarbon, the catalyst comprising a zeolite and a promoter metal M, the zeolite characterized by the retention of greater than 40% of the tetrahedral aluminum...
Another object of the present invention is to utilize a catalyst composition treated by a process of the present invention to hydrogenate a highly unsaturated hydrocarbon, such as acetylene, in admixture with a less unsaturated hydrocarbon, such as ethylene, to produce a further amount of less uns...
However, quenching distances from the simulations are lower than those from the experiments by a constant factor, which is the same for both methane and propane flames and also for a wide range of equivalence ratios and different markers. A systematic study of different influencing factors is ...
In addition, selective dehydrogenation was also implemented to reduce the acetylene concentration from 7% volume to 1 ppm to avoid copper acetylide formation and therefore, maximizing the availability of copper ions for olefin complexation. Usually, in copper aqueous systems, the cupric state of copper...
The exothermic process cuts an order of magnitude faster than other flame cutting processes, including oxy-acetylene, oxy-propane and liquid fuel. A spark from a battery-powered striker ignites the oxygen, which then uses the rod as fuel, completing the fire triangle. Once initiated, the flame...
In the HVOF process, such parameters are oxygen consumption, fuel consumption (e.g., acetylene, propane and others), distance between the substrate and spray nozzle, powder flow rate, powder shape and particle size, particle velocity and temperature, spray angle and substrate preheating [10,33]...
Oxyacetylene-welding (OAW) is aspecial caseof Oxyfuel Gas Welding (OFW). However, other gases that were used in the past (hydrogen, propane, natural and manufactured gases) have now onlylimited useand only for particular cases where lower temperature is sufficient. ...
of methane CH4(88.8%) and some added higher hydrocarbons, e.g., ethane C2H6, propane C3H8and butane C4H10. It is known that addition of these hydrocarbons can improve the natural gas combustion. The CNG also had a small percentage of nitrogen (N2) and carbon dioxide (CO2) diluents in ...
of C−H∙∙∙π in calix[4]pyrrole receptors yields a magnitude of −1 kcal/mol17. The C−H∙∙∙π interaction in benzene−methane, ethane, propane, and butane, increases monotonically from −1.1 to −2.7 kcal/mol18,19,20. The measurement of C−H∙∙∙...
more preferably no more than 4 carbon atoms, and most preferably no more than 2 carbon atoms. Non-limiting examples of such compounds include CO, methane, ethane, ethylene, acetylene, propane, propylene, butane, butene, butadiene, pentane, pentene, cyclopentadiene, hexane, cyclohexane, benzene, ...