相关实验视频

Updated: Feb 7, 2026

Atom Probe Tomography Analysis of Exsolved Mineral Phases
08:14

Atom Probe Tomography Analysis of Exsolved Mineral Phases

Published on: October 25, 2019

7.8K

用原子探头断层扫描在分子中分离轻元素集群

Joel E Schmidt1, Linqing Peng2, Alessandra Lucini Paioni3

  • 1Debye Institute for Nanomaterials Science , Utrecht University, Universiteitsweg 99 , 3584 CG Utrecht , The Netherlands.

Journal of the American Chemical Society
|July 14, 2018
PubMed
概括

原子探头扫描显示了SAPO-34催化剂中的 (Si) 聚合,对于甲醇与碳化合物的反应至关重要. 这种技术还确定了焦炭沉积物及其与酸位的亲和力,有助于催化剂设计.

更多相关视频

Atom Probe Tomography Studies on the CuIn,GaSe2 Grain Boundaries09:51

Atom Probe Tomography Studies on the CuIn,GaSe2 Grain Boundaries

Published on: April 22, 2013

13.3K
Spatial Separation of Molecular Conformers and Clusters10:37

Spatial Separation of Molecular Conformers and Clusters

Published on: January 9, 2014

11.8K

相关概念视频

Classification of Elements and Compounds02:54

Classification of Elements and Compounds

Pure substances consist of only one type of matter. A pure substance can be an element or a compound. An element consists of only one type of atom, while a compound consists of two or more types of atoms held together by a chemical bond. Elements are classified as atomic or molecular based on the nature of their basic units.
Compounds are pure substances composed of two or more elements in fixed, definite proportions. Compounds are classified as ionic or molecular (covalent) based on the bonds...
73.3K
Atomic Structure01:33

Atomic Structure

Overview
210.3K
Elements and Compounds01:27

Elements and Compounds

Pure substances consist of only one type of matter. A pure substance can be an element or a compound. An element consists of only one type of atom, while a compound consists of two or more types of atoms held together by a chemical bond.
Elements
Elements are classified as atomic or molecular based on the nature of their basic units. They are unique forms of matter with specific chemical and physical properties that cannot break down into smaller substances by ordinary chemical reactions. There...
105.1K
Periodic Classification of the Elements04:00

Periodic Classification of the Elements

The periodic table arranges atoms based on increasing atomic number so that elements with the same chemical properties recur periodically. When their electron configurations are added to the table, a periodic recurrence of similar electron configurations in the outer shells of these elements is observed. Because they are in the outer shells of an atom, valence electrons play the most important role in chemical reactions. The outer electrons have the highest energy of the electrons in an atom...
59.3K
Molecular Models02:00

Molecular Models

Physical models representing molecular architectures of chemical compounds play essential roles in understanding chemistry. The use of molecular models makes it easier to visualize the structures and shapes of atoms and molecules.
43.8K
Atomic Mass01:52

Atomic Mass

Atoms — and the protons, neutrons, and electrons that compose them — are extremely small. For example, a carbon atom weighs less than 2 × 10−23 g. When describing the properties of tiny objects such as atoms, we use appropriately small units of measure, such as the atomic mass unit (amu). The amu was originally defined based on hydrogen, the lightest element, then later in terms of oxygen. Since 1961, it has been defined with regard to the most abundant isotope of carbon, atoms of which...
70.4K