In Situ Recycling of E‐Waste Into Gold‐Loaded Cage Catalysts for Propargylamine Synthesis From Benzyl Alcohol
Year: 2026
Type: article
Abstract: Recovering gold from e‐waste and giving it new properties not only facilitates the recycling of resources but also offers economic and environmental benefits. Herein, we report the use of a highly stable porous aromatic cage (T‐PAC) for the selective extraction of gold from e‐waste ( K d = 3.42 × 10 5 mL g −1 , with >99% removal). The gold‐loaded cage catalyst Au@PAC can catalyze the coupling of phenylboronic acid with high efficiency and 99% conversion. Notably, Au@PAC can catalyze the synthesis of propargylamine starting from benzyl alcohols rather than conventional aldehydes. A variety of propargylamines were successfully prepared in good yields (76%–84%) with water as the solvent. We show that T‐PAC’s unique binding sites and reaction microenvironment facilitate the in situ generation of Au 0 and the immobilization of Au III ; these two valence states of gold species jointly participate in and drive the reaction, enabling the one‐step conversion of alcohols to propargylamine. This study demonstrates a circular economy approach that integrates waste recovery, catalyst preparation, and green synthesis.
Source: ChemSusChem
DOI: 10.1002/cssc.71210
Institutions: Northeast Normal University, Hainan Normal University
Language: English
Topic: Catalytic Alkyne Reactions
Subfield: Organic Chemistry
Field: Chemistry
Domain: Physical Sciences
Open Access status: bronze
OpenAlex ID: W7225647624