A Review on the Conversion of Synthetic Gas to LPG over Hybrid Nanostructure Zeolites Catalysts

Abstract

Recently, Liquified petroleum gas (LPG) attracts wide applications due to its high heating value and clean combustibility. An innovative approach to synthesis of LPG from syngas was established based on Fisher-Tropsch (F-T) technology. However, the conversion and selectivity are generally low with the classical catalysts. The hybrid system of methanol and zeolitebased catalyst was established as a potential approach to promote such a process. To strongly overcome the large demand of LPG and grasp the research work in this subject, a comprehensive review became necessary. LPG is basically produced from syngas through the direct method, where most recent studies lay on, and the indirect or semi direct approach. There were several factors affecting the process performance, which mainly are the reaction temperature, reaction pressure, type of the hybrid catalyst, carbon monoxide to hydrogen ratio, mixture flow rate, and time-on-stream of the reaction. The most common reaction conditions reported in the literature are 260-400 °C, 10-50 bars and H 2 to CO ratio of 2. However, the most important parameter considered was the catalyst, which is a key factor of interest. The two main issues controlling the catalyst performance were the synergetic effect between the two hybridized catalysts and the used type of zeolite. It was perceived that the higher the zeolite membered rings the better the LPG selectivity (i. e., BEA, and USY provided the higher LPG production rate).

Simulation and Modelling of Hydrogen Production from Waste Plastics: Technoeconomic Analysis

“…from carbon-based materials such as fossil fuels, and biomass [ 10 , 11 , 12 , 13 , 14 ]. The syngas can then be used to produce several fuels and chemicals [ 15 ]. The gasification process is usually promoted through a high-temperature reaction (>700 ) using oxygen or steam as an auxiliary component (air gasification or steam gasification) [ 16 , 17 ].…”

The Effect of Hydrophobically Modified Iron Catalysts with Hexadecyltrimethoxysilane on Fischer‐Tropsch Synthesis

“…Fischer-Tropsch synthesis is the best way and main development direction for the conversion of syngas into clean liquid fuels and high value-added chemicals. [1][2][3][4][5] Since Frans Fischer and Hans Tropsch first proposed the Fischer-Tropsch synthesis technology in 1923, the research and development of efficient Fischer-Tropsch synthesis catalysts has been widely concerned. [6,7] The traditional Fischer-Tropsch synthesis is affected by the distribution of ASF(Anderson-Schulz-Flory), and the product distribution is wide.…”

Technoeconomic Feasibility of Hydrogen Production from Waste Tires with the Control of CO2 Emissions

“…Generally, it has been observed that the increase in the temperature attributes to more gas yield with higher hydrogen contents with the suppression of tar and char concentrations. The obtained syngas could be used to produce several fuels and chemicals. , …”

“…The obtained syngas could be used to produce several fuels and chemicals. 33,34 Air and steam are the two most commonly used gasification agents, and several studies have been conducted on the gasification of scrap tires utilizing these gasification agents to analyze their impact on the final product and the overall process. Xiao et al 35 studied the impact of equivalence ratio (ER) on the gas yield using air as a gasification agent.…”