C. 3. OF PROPANE DEHYDROGENATION INTO PROPYLENE QURRATUAINI BINTI HASSANUSI A thesis submitted in fulfilment of the Requirement for the award of the Degree of Bachelor of Chemical Engineering Chemical Engineering and Natural Resources Faculty Universiti Malaysia Pahang FEBRUARY 2013 . Propane epoxidation was carried out by sequential propane dehydrogenation–propylene epoxidation steps using a two-catalyst bed and H 2 and O 2 as the oxidant mixture. The feedstock is naphtha or, especially in the Middle East, where there is an abundance of propane from oil/gas operations. Important aspects in catalytic dehydrogenation of propane entail near-equilibrium conversion while minimizing side reactions and coke formation. Historically, catalyst design breakthroughs have made major contributions to the development of commercial PDH process technologies. Reaction by-products (mainly hydrogen) are usually used as fuel for the propane dehydrogenation reaction. The oxidative dehydrogenation of propane is an attractive reaction for propylene production, but the overoxidation leads to low propylene selectivity at considerable propane conversions. Oct 11, 2007 - On-purpose production of propylene from propane. Oxidative dehydrogenation of propane (ODHP) in the presence of O 2 faces the challenges of deep oxidation of propane and propene to CO x (CO and CO 2), often resulting in loss of propene selectivity and yield (1, 2). V-based catalysts have been widely studied in the ODHP with main side products of CO x and negligible amount of C2-products (3–5). The propylene from propane yield is about 85 m%. We have shown that Pt/Al 2 O 3 catalysts possess higher propylene selectivity and lower deactivation rate as well as enhanced anti-coking ability upon Cu addition. The elevated temperatures and low pressures favor the forward reaction and hence increasing the yield of propylene.
Propane dehydrogenation is known as an endothermic equilibrium limited reaction. Here, we report the oxidative dehydrogenation of propane by oxygen in the presence of hydrogen chloride. Propane Propylene + Hydrogen The table above compared this process with the other commercial processes. grade propylene from propane rich streams through the following steps: dehydrogenation of propane to make propylene, compression of reactor effluent, recovery and purification of the product [14,15]. By-products are usually used as fuel for the propane dehydrogenation reaction.
CeO2 was found to be an efficient catalyst for the conversion of propane to propylene by (O2 + HCl). The propane dehydrogenation step used a Au/TiO 2 catalyst that was active at the low temperature (443 K) used for the propylene epoxidation step; the latter used a Au/TS-1 catalyst.
It is usually carried out at 873-923 K under the pressure of 15 - 250 kPaG in the presence of metal catalyst such as platinum based catalyst. Catalytic Dehydrogenation of Propane and Isobutane in Hydrogen Permselective Membrane Reactors John P. Collins', Rakesh Sehgal', ... improvements in propylene yield were obtained when the silica-based membranes were tested in propane dehydrogenation experiments. The yield of propene is about 85 m%. Herein, we report on catalytic activity of high surface area hexagonal boron nitride, toward oxidative dehydrogenation of propane. This paper describes an investigation of the promotional effect of Cu on the catalytic performance of Pt/Al 2 O 3 catalysts for propane dehydrogenation. â ¢ Typically Pt or Cr based systems.
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