Thermal decomposition and oxidation of pyrite with different morphologies in the coal gangue of North China

A novel P/N/Si/Zn-containing hybrid flame retardant for enhancing flame retardancy and smoke suppression of epoxy resins

“…Furthermore, the peak heat release rate (PHRR), peak total heat release (THR), peak smoke production (PSPR), and total smoke production (TSP) of the composites decreased by 51.3%, 13.2%, 37.2%, and 20.9%, respectively. Liang et al 26 developed a zeolite imidazolate framework (ZIF-8) with an enhanced nitrogen content, known as N-ZIF-8, by substituting 2-methyl imidazolyl ester with a triazole. This modication aimed to generate more nitrogencontaining compounds to dilute the ammable gas.…”

Design and Development of Sustainable Polyurethane Foam: A Proof‐of‐Concept as Customizable Packaging for Cultural Heritage Applications

“…Moreover, aiming at reducing energy consumption and environmental impact, there is plenty of literature concerning the substitution of petrol-based polyolprecursors with others from bio-based feedstock, such as natural oils (palm oil, castor oil, rapeseed, linseed oil, and sunflower oil), [14,19] or biomass-derived raw materials (e.g., tannin, cellulose, lignin, cardanol, and succinic acid). [7,8,14,[20][21][22][23][24][25] The addition of micro or nanofillers obtained from natural sources, biomass, or packaging wastes, [11,12,26] is currently used in formulations to enhance functional properties such as compressive and impact strength, thermal or acoustic insulation, [13,27,28] thermal stability, [29,30] flame retardancy, [31] and adsorption of pollutants [32][33][34] compared to unloaded materials. In recent years, there has been a growing interest in materials like zeolites as functionalized fillers in polymer composites.…”

Thermal decomposition of sulfur brown coal

“…As high-quality coals are produced, coal of poorer quality is increasingly being used, which will negatively affect the environmental situation [6]. Low-quality coals are characterized by a predominance of sulfide sulfur: mainly pyrite (FeS 2 ), as well as chalcopyrite (CuFeS 2 ) and marcasite (iron polysulfide, FeS 2 ) [7]. Organosulfur compounds are an integral part of the coal matrix and are thiol (R-H-S), sulfide (R-S-R'), disulfide (R-S-S-R), sulfoxide (R-S-O-R) and thiophene (heterocyclic) compounds [8][9].…”