Scholarlink

<p>A novel Cu(II)-based heterogeneous catalyst, SBA-15@bis(Py-2-NHNH<sub>2</sub>)-Cu(II), was prepared via sequential functionalization of SBA-15 with APTES, cyanuric acid, and 2-hydrazinopyridine, followed by Cu(OAc)<sub>2</sub> complexation. The catalyst was thoroughly characterized by FT-IR, solid-state<sup><CitationRef CitationID="CR13">13</CitationRef></sup>C NMR, TGA, BET, XPS, and EDAX, confirming successful ligand grafting, Cu(II) coordination, and structural integrity. Under optimized conditions in DMSO, the catalyst efficiently promoted ammonia monoarylation with a wide range of aryl halides. It exhibited negligible activity loss and minimal copper leaching (&lt; 0.2%) in the first run and maintained its performance over five consecutive cycles. Hot filtration experiments further confirmed its heterogeneous nature and sustained stability. Post-catalytic characterization by FT-IR and EDAX verified that the catalyst retained its structure and active metal centers. Overall, these results demonstrate that SBA-15@bis(Py-2-NHNH<sub>2</sub>)-Cu(II) is a robust, recyclable, and sustainable catalyst, providing an effective alternative to precious metals for C-N bond formation.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

SBA-15-supported copper(II)–2-hydrazinopyridine complex as an efficient reusable catalyst for the selective monoarylation of ammonia

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2026年2月26日

查看全文
  • Fateme Ghahramani,
  • Yagoub Mansoori,
  • Yuksel Akinay,
  • Tayfun Çetin

摘要

A novel Cu(II)-based heterogeneous catalyst, SBA-15@bis(Py-2-NHNH2)-Cu(II), was prepared via sequential functionalization of SBA-15 with APTES, cyanuric acid, and 2-hydrazinopyridine, followed by Cu(OAc)2 complexation. The catalyst was thoroughly characterized by FT-IR, solid-state13C NMR, TGA, BET, XPS, and EDAX, confirming successful ligand grafting, Cu(II) coordination, and structural integrity. Under optimized conditions in DMSO, the catalyst efficiently promoted ammonia monoarylation with a wide range of aryl halides. It exhibited negligible activity loss and minimal copper leaching (< 0.2%) in the first run and maintained its performance over five consecutive cycles. Hot filtration experiments further confirmed its heterogeneous nature and sustained stability. Post-catalytic characterization by FT-IR and EDAX verified that the catalyst retained its structure and active metal centers. Overall, these results demonstrate that SBA-15@bis(Py-2-NHNH2)-Cu(II) is a robust, recyclable, and sustainable catalyst, providing an effective alternative to precious metals for C-N bond formation.