Fig. 1: Schematic depiction of zirconium alkyl surface chemistry on various oxide surfaces. | Nature Communications

Fig. 1: Schematic depiction of zirconium alkyl surface chemistry on various oxide surfaces.

From: Rapid atom-efficient polyolefin plastics hydrogenolysis mediated by a well-defined single-site electrophilic/cationic organo-zirconium catalyst

Fig. 1: Schematic depiction of zirconium alkyl surface chemistry on various oxide surfaces.The alternative text for this image may have been generated using AI.

a Zr alkyl-derived adsorbate on a relatively weak Brønsted acidic surface, providing relatively strong conjugate Brønsted base counteranions, b Cp*Zr(CH3)3-derived adsorbate on a very strong Brønsted acidic surface (AlS = sulfated alumina). c ZrNp4-derived (Np = neopentyl) adsorbate on a very strong Brønsted acidic surface followed by H2 exposure. d ZrNp4 protonolytic chemisorption on strongly Brønsted acidic sulfated alumina (AlS), and generation of the corresponding electrophilic hydride via Zr–Np σ-bond hydrogenolysis.

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