Paraffins activation through Fluidized Bed Dehydrogenation: the answer to light olefins demand increase

Deactivation Studies of the CrOx/Al2O3 Dehydrogenation Catalysts under Cyclic Redox Conditions

“…The CrOx/Al 2 O 3 catalyst is currently employed in two commercial paraffin dehydrogenation technologies, including the Catofin process , and the fluid bed dehydrogenation process. , In both processes, the catalyst is operated in a cyclic dehydrogenation–regeneration (redox) mode with very short dehydrogenation (7–15 min) and oxidative regeneration (7–15 min) cycles. The use of short dehydrogenation time in these technologies is to maintain the heat balance of an adiabatic reactor where the heat required for the endothermic dehydrogenation reactions is provided by burning coke and by hot air during regeneration.…”

Vanadium Oxo Organometallic Species Supported on Silica for the Selective Non-oxidative Dehydrogenation of Propane

“…Propylene is one of the major intermediates in the chemical industry and is generally obtained as a coproduct from steam cracking of heavier hydrocarbons. Because of the increasing demand of propylene, several on-purpose methods for its production have been developed, such as olefin metathesis, − methanol to olefin, , and catalytic dehydrogenation of propane over a heterogeneous catalyst. , Dehydrogenation reactions can be performed under oxidative or non-oxidative conditions. The most common path in industrial plants is a straight dehydrogenation (Oleflex process), without O 2 , but this reaction suffers from some problems.…”

Highly robust and efficient MnZnFe2O4 decorated fibrous KCC-SiO2 catalyst for the synthesis of light olefins from syngas

“…The comparison was performed in terms of product selectivity, CO/H 2 conversion ratio, synthesis approach and stability, and the results are collected in Table 2. 2,8,12,13,27,[33][34][35] From this comparison, we can clearly distinguish that, several synthesis routes were utilized to obtain various catalysts to achieve high FTS performance. Nevertheless, the 'ideal' catalyst has not been found yet and all the investigated systems suffer from some drawbacks.…”

“…Light olefin products (C2-C4), including ethylene, propylene and butylene, are extensively being utilized as petrochemical feedstocks and raw materials in versatile important applications such as synthetic rubbers, polymers, paints, solvents and fuel components. 1,2 Generally, the production of light olefins is classified into two strategies: conventional petroleum and non-petroleum approaches. However, the conventional pathways such as fluid catalytic cracking of petroleum or naphtha stream pyrolysis methods suffer from complicated multistep procedures, high cost and low selectivity.…”

“…However, the conventional pathways such as fluid catalytic cracking of petroleum or naphtha stream pyrolysis methods suffer from complicated multistep procedures, high cost and low selectivity. 2,3 Alternatively, the direct synthesis of light olefins from syngas (H 2 /CO) and through the well-known Fischer-Tropsch synthesis (FTS) reaction has gained considerable interest from both academia and industrial societies. Indeed, the FTS reaction, a non-petroleum pathway, is an environmentally-benign reaction between carbon monoxide and hydrogen to produce high-quality liquid fuels and high value-added fine chemicals.…”