Molybdenum recovery from spent Mo-based dispersed catalyst accumulated in heavy oil steam cracking coke

Sosnin, G. A.; Yazykov, N. A.; Zaikina, Olesya O.; Yakovlev, V. А.

doi:10.1016/j.fuproc.2020.106520

Cited by 7 publications

(1 citation statement)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Thus, the carbon-containing phase of the coal can be characterized by the highest stability to both pyrolysis and oxidation that results in the lowest burn off degree compared to other raw materials. For example, it was previously found that another feedstock, having similar composition of carbon-containing phase -petroleum coke, was impossible to be burnt completely in the fluidized catalyst bed reactor even at 750 • C using similar deep oxidation catalyst [29].…”

Section: Resultsmentioning

confidence: 99%

Green approach to production of porous char adsorbents via oxidative carbonization in fluidized catalyst bed

Yeletsky,

Yazykov,

Dubinin

et al. 2024

Nanosystems: Phys. Chem. Math.

View full text Add to dashboard Cite

A green and energy-efficient technique for production of porous carbon-mineral chars from agricultural wastes (rice husk, wheat bran) and sedimentary carbonaceous feedstocks (high-ash peat, coal) was developed. It is based on partial combustion in fluidized bed of a deep oxidation catalyst at low temperatures (465 -600 • C). This technique yields porous chars with an elevated mineral content that depends on a feedstock used, and gaseous products of complete oxidation. It was found that the obtained chars have developed porosity with BET specific surface area of ca. 50 -170 m 2 g −1 , pore volume of 0.05 -0.17 ml•g −1 , and ash content of 16 -79 wt. %. They were additionally characterized by TGA and FTIR. Their testing as adsorbents for heavy metal ions (by the example of Cu 2+ ) and organic dyes (by the example of methyl green) revealed that their adsorption capacities are comparable to those of chars produced by the conventional pyrolytic approaches. KEYWORDS biochar, biomass, rice husk, bran, fluidized catalyst bed, composite

show abstract

Section: Resultsmentioning

confidence: 99%