毛线球状ZnO超结构在反应吸附脱硫中的优异性能（英文）

• 作 者: 白鹏 刘博文 吴萍萍 Rooh Ullah 邢伟 阎子峰
• 机 构: State Key Laboratory of Heavy Oil Processing,PetroChina Key Laboratory of Catalysis,College of Chemi
• 出 处: Science China Materials
• 发表日期: 2017年10期
• 关键词: 吸附脱硫 ZnO 超结构 均匀沉淀法 硫容量 adsorbent 自组装 sulfur attributed crystallite

本文利用共聚物控制均匀沉淀法自组装合成了一种毛线球状ZnO超结构.通过将Ni浸渍于该氧化锌材料上制备了一系列Ni/ZnO吸附剂.其中,样品Ni/ZnO-4h在反应吸附脱硫中表现出极高的硫容量(189.1 mg Sg~(-1)),是相同条件下使用普通商业ZnO制备的Ni/ZnO-C样品的6倍.毛线球状ZnO疏松开放的结构能够促进反应物/产物的扩散,并抑制体积膨胀对吸附剂结构的破坏.较小的ZnO颗粒在提供较高的硫容量的同时还能促进活性组分Ni的分散,从而导致吸附剂具有较高的反应吸附脱硫性能.

In this paper, a ball-like ZnO nanostructures were synthesized by self-assembly of the copolymer-controlled homogeneous precipitation method. A series of Ni / ZnO adsorbents were prepared by impregnating Ni-ZnO with Ni. Among them, Ni / ZnO- Adsorption desulfurization showed an extremely high sulfur capacity (189.1 mg Sg -1), which was 6 times higher than that of Ni / ZnO-C samples prepared by common commercial ZnO under the same conditions. Diffusion of reactants / products and inhibition of the destruction of the structure of the adsorbent by volumetric expansion. The smaller ZnO particles, while providing a higher sulfur capacity, also promote the dispersion of the Ni as the active ingredient, resulting in a higher Reaction adsorption desulfurization performance.