Chemical recycling of plastic waste to monomers: Effect of catalyst contact time, acidity and pore size on olefin recovery in ex-situ catalytic pyrolysis of polyolefin waste

Direct amination of poly(p-phenylene oxide) to substituted anilines over bimetallic Pd–Ru catalysts

“…2 Chemical recycling is an alternative approach, generating small molecular compounds from plastic that could either be repolymerized or directly used as fine chemicals. 3,4 Current research focuses on the catalytic activation of C–C, C–O, and C–N bonds in common plastics, leading to the formation of various chemicals such as aliphatic hydrocarbons, 5–19 arenes 20–23 and oxygenates. 24–26…”

“…2 Chemical recycling is an alternative approach, generating small molecular compounds from plastic that could either be repolymerized or directly used as fine chemicals. 3,4 Current research focuses on the catalytic activation of C-C, C-O, and C-N bonds in common plastics, leading to the formation of various chemicals such as aliphatic hydrocarbons, [5][6][7][8][9][10][11][12][13][14][15][16][17][18][19] arenes [20][21][22][23] and oxygenates. [24][25][26] Organonitrogen chemicals, constituting over 80% of the top 200 pharmaceuticals among others, are pivotal in the chemical sector.…”

Ni-based catalysts supported on Hbeta zeolite for the hydrocracking of waste polyolefins

“…17,18 In recent years, catalytic degradation has attracted increased attention as a viable process for the chemical recycling of polyolen plastics under mild reaction conditions. 19,20 In previous studies, monofunctional catalysts such as ZSM-5 (ref. 21) and Hbeta 22 were employed for the cracking of poly-olen plastics, yielding substantial non-solid products.…”