Catalytic decomposition of methane into hydrogen and high-value carbons: combined experimental and DFT computational study

Abstract

Thermocatalytic decomposition (TCD) of methane can produce hydrogen and valuable nanocarbon co-products with low to near-zero CO2 emission. In this study, a series of Pd promoted Ni catalysts, prepared with...

Methane Catalytic Pyrolysis by Microwave and Thermal Heating over Carbon Nanotube-Supported Catalysts: Productivity, Kinetics, and Energy Efficiency

“…As a result, acid treatment can be used to dissolve metals on the tip or base of the CNT in order to purify grown CNT . In our recent study, a MCP process with cyclic reaction-regeneration was experimentally demonstrated . The results showed that the Ni–Pd/CNT catalyst can be regenerated and re-applied.…”

“…As a result, a base-grown catalyst design concept was reported with the objective to retain metal on the surface . Other than supported catalysts, liquid metal and molten salts were used as catalysts for methane conversion into hydrogen. , Mechanistic studies were carried out on the formation of carbon nanomaterials over metal-supported catalysts. − Progress has been made on understanding the fundamental reaction pathways over a carbon nanotube (CNT)-supported binary metal catalyst by using density functional theory. , …”

“…However, the SMR process produces CO 2 which makes it difficult to compete with the CO 2 -free MCP process. Technoeconomic analysis was conducted to compare MCP with SMR where carbon capture and sequestration (CCS) was adopted. , The uncertainty is the CCS which has geographical constraint. The selection of the CCS site is influenced by underground geological formation.…”

Catalytic methane decomposition to hydrogen and carbon over hydrotalcite‐derivative composition‐uniform and sintering‐resistant Ni‐Fe / Al 2 O 3 alloy catalysts

“…However, the problem is that the active metal particles are easily encapsulated with carbon, causing a rapid deactivation of the catalyst. Therefore, many studies have been devoted to enhancing the catalyst performance 12‐20 …”

“…Therefore, many studies have been devoted to enhancing the catalyst performance. [12][13][14][15][16][17][18][19][20] It has been indicated that the addition of a second metal to the nickel catalyst can improve the catalytic performance of CDM. 21 In this regard, Cu-promoted Ni catalysts have been widely investigated and demonstrated to enhance the catalytic life and carbon yield in CDM.…”