Nitrogen adsorption represents the most widely used method for the determination of pore size in the micropore and lower mesopore range [1, 2]. In the case of mesopores, the method relies …

Aug 31, 2001 · Nitrogen adsorption can be regarded as the first stage in the characterisation of microporous and mesoporous solids. In particular, it should not be expected to give more than …

The nitrogen adsorption at a low temperature is a mature and widely used method to measure the specific surface area and pore size distribution of materials.

Problems, which may arise when low-temperature nitrogen adsorption is used for the characterisation of porous materials, are discussed in this review. Continuous or discontinuous …

Feb 3, 2020 · Here, we report a metal–organic framework featuring exposed vanadium (ii) centres capable of back-donating electron density to weak π acids to successfully target π acidity for …

Electrochemical reduction of N 2 (NRR) offers a sustainable approach for ammonia (NH 3) synthesis, serving as a complementary to the traditional emission- and energy-intensive …

4 days ago · Discover the fascinating world of nitrogen absorption as we delve into the materials and methods that have the remarkable ability to soak up nitrogen. Uncover the science behind …

Sep 1, 2023 · In this work, we analyze the nitrogen physisorption isotherms recorded for a series of materials based on amorphous aluminosilicates synthesized by sol–gel via hydrolysis in …

Feb 7, 2014 · Similar to a traditional palladium (Pd)-based hydrogen (H 2)-selective membrane for hydrogen purification, N 2 molecules preferentially adsorb on the catalytic membrane and …

Nov 3, 2020 · 1.1 This test method covers the determination of nitrogen adsorption and desorption isotherms of catalysts and catalyst carriers at the boiling point of liquid nitrogen. 2 A …

5 days ago · This theoretical study examines the dinitrogen adsorption on CnP clusters (n ≤ 3) by using density functional theory. CnP clusters show lower adsorption energies and greater N─N …

Oct 13, 2024 · The BET analysis is a cornerstone technique in material science for evaluating the surface area and porosity of materials through nitrogen (N2) adsorption-desorption isotherms. …

Sep 1, 2024 · In this study, we systematically investigate the effect of external electric fields on tuning the N 2 adsorption and NN* activation performances of Nb 3, Zr 3, and Y 3.

For nanoporous materials this can be done with gas adsorption. Historically, nitrogen gas (N 2 ) at liquid nitrogen temperature (77 K / -196.15 °C) was the preferred choice for gas adsorption …

Nov 10, 2023 · Nitrogen adsorption–desorption measurements can help us obtain results about cracks and orifices (pores) of different sizes and shapes in a solid sample that has been …

Dec 14, 2023 · This work quantitatively studies the nitrogen adsorption isotherms of three-dimensional complex nanopore structures using molecular simulation and provides a …

Nitrogen adsorption–desorption isotherms at 77 K provide type-IV features and typical adsorption–desorption hysteresis, which suggests micropore and mesopore formation. …

Jan 20, 2025 · Furthermore, the relationship between the total nitrogen content and the CO₂ adsorption performance was also investigated to explore the impact of nitrogen on CO₂ …

Mar 11, 2023 · Nitrogen adsorption/desorption isotherms, scanning electron microscopy, and transmission electron microscopy were conducted to better understand the physicochemical …

Nitrogen adsorption is the process by which nitrogen gas (N₂) molecules adhere to the surface of a solid material, often used in the context of measuring surface area and porosity of materials.

In this work, we proposed achieving N 2 selectivity adsorption over CH 4 by chelating Fe 2+ sites on the ligands of MOFs. The significant enhancement of N 2 /CH 4 separation by Fe chelation …

6 days ago · Separating NH3 from N2 and H2 using adsorption onto porous materials at elevated pressures and temperatures has been proposed as a promising alternative to optimize the …