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作为高效异质催化剂的酸支持酸复合物的受控合成
Kohsuke Mori1, Kazuya Yamaguchi, Takayoshi Hara
1Department of Chemical Science and Engineering, Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyama, Toyonaka, Osaka 560-8531, Japan.
Journal of the American Chemical Society
|September 26, 2002
概括
这项研究开发了用于高效的酒精氧化和Heck/Suzuki反应的新型-酸 (PdHAP) 催化剂. 这些可回收的异质催化剂提供高活性和纳米控制,推进功能化催化剂设计.
科学领域:
- 不同质的催化剂.
- 材料科学是一种材料科学.
- 纳米技术纳米技术
背景情况:
- 精确控制固体表面上的活性物种对于开发先进的异质催化剂至关重要.
- 酸酸 (HAPs) 是多功能材料,具有可调节性质,用于催化剂支.
研究的目的:
- 合成和表征用于催化应用的新型-酸 (PdHAP) 复合物.
- 研究PdHAP在酒精氧化和交叉合反应中的催化活性.
- 为了探索基亚酸盐固体测量对催化剂性能的影响.
主要方法:
- 将PdCl ((2) (((PhCN) ((2)) 接种在静态度和非静态度的酸上.
- 由此产生的复合物和纳米粒子的表征.
- 在酒精氧化,赫克和苏苏基反应中的催化活性评估.
主要成果:
- 单体PdCl(2) 种植在石化HAP上转化为Pd(0) 纳米粒子,高度活跃于酒精氧化 (TON高达236,000).
- 在Ca缺乏HAP上形成的一种单体Pd(II) 酸盐复合物在Heck和苏苏基反应中表现出高活性.
- 合成的PdHAP催化剂表现出极好的可回收性和对测试反应的高活性.
结论:
- 控制酸与酸在酸中的比例,使得高活性和选择性催化剂的纳米级设计成为可能.
- PdHAP催化剂在酒精氧化和交叉合反应的异质催化中取得了重大进展.
- 开发的方法为创建下一代功能化催化剂提供了一个有希望的策略.
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