在装饰的高酸单体气凝中封装氨基,用于储存和可控制的释放
Ang Mi1, Rongping Yun1, Huishan Shang2
1State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing, 100029, People's Republic of China.
ChemSusChem
|October 12, 2024
概括
研究人员开发了一种新方法,使用氨酸 (AB) 和催化剂在高酸气凝 (KA) 中进行按需释放. 这种受控的气生产策略可以有效利用能源,而无需外部能量或试剂.
科学领域:
- 材料科学 材料科学 材料科学
- 催化剂是一种催化剂.
- 储能 储能 储能 储能 储能 储能
背景情况:
- 控制释放对于按需能应用至关重要.
- 目前的方法通常需要外部能量输入或额外的试剂,这对实际使用构成挑战.
研究的目的:
- 从氨 (AB) 开发一种用于控制气生产的新战略.
- 用复合材料在需求时实现开关释放.
主要方法:
- 将氨基 (AB) 和 (Co) 催化剂加载到高化气凝 (KA) 中,形成一个复合单体 (AB@Co/KA).
- 研究复合材料的结构,包括C粒子装饰和空气凝孔内的AB填充.
- 通过控制添加到AB@Co/KA系统的水量来调节生成.
主要成果:
- 在考利尼特气凝表面,使用表面氧化物种对Co颗粒的均装饰.
- 在气凝孔内成功集成AB,形成稳定的储复合材料.
- 通过调整水量来实现开关释放控制,证明按需生产.
- 同修改的高酸气凝 (Co/KA) 显示在AB的完全水解后,可回收用于多种用途.
结论:
- 开发的AB@Co/KA复合材料为按需释放提供了一个有希望的方法.
- 这种方法允许在没有外部能量或外来试剂的情况下进行受控的生成.
- 催化剂的可回收性进一步提高了这种储能系统的实用性.
相关概念视频
Hydroboration-Oxidation of Alkenes
7.9K
In addition to the oxymercuration–demercuration method, which converts the alkenes to alcohols with Markovnikov orientation, a complementary hydroboration-oxidation method yields the anti-Markovnikov product. The hydroboration reaction, discovered in 1959 by H.C. Brown, involves the addition of a B–H bond of borane to an alkene giving an organoborane intermediate. The oxidation of this intermediate with basic hydrogen peroxide forms an alcohol.
7.9K
Alkynes to Aldehydes and Ketones: Hydroboration-Oxidation
17.9K
Introduction
One of the convenient methods for the preparation of aldehydes and ketones is via hydration of alkynes. Hydroboration-oxidation of alkynes is an indirect hydration reaction in which an alkyne is treated with borane followed by oxidation with alkaline peroxide to form an enol that rapidly converts into an aldehyde or a ketone. Terminal alkynes form aldehydes, whereas internal alkynes give ketones as the final product.
One of the convenient methods for the preparation of aldehydes and ketones is via hydration of alkynes. Hydroboration-oxidation of alkynes is an indirect hydration reaction in which an alkyne is treated with borane followed by oxidation with alkaline peroxide to form an enol that rapidly converts into an aldehyde or a ketone. Terminal alkynes form aldehydes, whereas internal alkynes give ketones as the final product.
17.9K
Regioselectivity and Stereochemistry of Hydroboration
8.1K
A significant aspect of hydroboration–oxidation is the regio- and stereochemical outcome of the reaction.
Hydroboration proceeds in a concerted fashion with the attack of borane on the π bond, giving a cyclic four-centered transition state. The –BH2 group is bonded to the less substituted carbon and –H to the more substituted carbon. The concerted nature requires the simultaneous addition of –H and –BH2 across the same face of the alkene giving syn...
Hydroboration proceeds in a concerted fashion with the attack of borane on the π bond, giving a cyclic four-centered transition state. The –BH2 group is bonded to the less substituted carbon and –H to the more substituted carbon. The concerted nature requires the simultaneous addition of –H and –BH2 across the same face of the alkene giving syn...
8.1K


