纳米氧化锆作为固定化磺酸的极佳纳米载体：一种用于多组分反应的新型，高效且高度可回收的异质固体酸纳米催化剂<a href="#fn1" title="提供电子补充信息（ESI）。参见DOI：10.1039 / c5nj02430g">†</a>,New Journal of Chemistry

当前位置： X-MOL 学术 › New J. Chem. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

纳米氧化锆作为固定化磺酸的极佳纳米载体：一种用于多组分反应的新型，高效且高度可回收的异质固体酸纳米催化剂 †
New Journal of Chemistry ( IF 2.7 ) Pub Date : 2015-11-17 00:00:00 , DOI: 10.1039/c5nj02430g
Ali Amoozadeh _{1,

2,

3,

4} , Salman Rahmani _{1,

2,

3,

4} , Mehrnoosh Bitaraf _{1,

2,

3,

4} , Fatemeh Bolghan Abadi _{1,

2,

3,

4} , Elham Tabrizian _{1,

2,

3,

4}

Affiliation

纳米氧化锆负载的磺酸[纳米ZrO ₂ -SO ₃H（n-ZrSA）]是通过将磺酸基团固定在纳米二氧化锆表面上合成的，从而生产出新型的可重复使用的固体酸纳米催化剂。这种新型纳米催化剂的特点是FT-IR光谱，热重分析（TGA），X射线衍射（XRD），场发射扫描电子显微镜（FE-SEM），透射电子显微镜（TEM），哈米特酸度函数和pH分析。引入的纳米氧化锆负载的磺酸可用作高效的可循环催化剂，用于不同的杂环多组分反应，例如六氢喹啉，1,8-二氧-十氢ac啶，聚氢喹啉和1,8-二氧-八氢hydro吨衍生物的合成。使用中央复合设计（CCD）研究了反应条件的优化，CCD是最广泛使用的响应面方法之一。新制备的多相固体酸纳米催化剂易于分离并可以重复使用五个循环，而其催化活性没有任何明显的损失，这证实了磺酸基团的共价键的稳定性。n-ZrSA具有低成本，低毒性，易于制备，稳定性好，可重复使用性高和操作简便等优点。

"点击查看英文标题和摘要"

Nano-zirconia as an excellent nano support for immobilization of sulfonic acid: a new, efficient and highly recyclable heterogeneous solid acid nanocatalyst for multicomponent reactions†

Nano-zirconia-supported sulfonic acid [nano-ZrO₂-SO₃H (n-ZrSA)] is synthesized by immobilizing sulfonic acid groups on the surface of nano zirconium dioxide to produce a novel heterogeneous reusable solid acid nanocatalyst. This new nanocatalyst is characterized by FT-IR spectroscopy, thermogravimetric analysis (TGA), X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), transmission electron microscopy (TEM), the Hammett acidity function and pH analysis. The introduced nano-zirconia-supported sulfonic acid is used as an efficient and recyclable catalyst for different heterocyclic multicomponent reactions such as the synthesis of hexahydroquinoline, 1,8-dioxo-decahydroacridine, polyhydroquinoline and 1,8-dioxo-octahydroxanthene derivatives. Optimization of the reaction conditions was studied using a central composite design (CCD) which is one of the most widely used response surface methodologies. The newly prepared heterogeneous solid acid nanocatalyst is easily separated and reusable for five cycles without any apparent loss of its catalytic activity, which confirmed the stability of the covalent bonding of the sulfonic acid groups. n-ZrSA has advantages such as its low cost, low toxicity, ease of preparation, good stability, high reusability and operational simplicity.

更新日期：2015-11-17

点击分享查看原文

点击收藏

阅读更多本刊新发论文本刊介绍/投稿指南