Nitrogen Oxygen Separation in Lithium Exchanged Zeolite LiX
Introduction Nitrogen and oxygen are among the most widely utilized industrial chemicals, with applications spanning healthcare, metallurgy, fertilizer synthesis, and food preservation. Despite their atmospheric abundance, isolating these gases in pure form presents a significant engineering challenge due to their similar kinetic diameters and boiling points. Nitrogen has a kinetic diameter of 3.64 Å compared […]
Collecting High Pressure Carbon Dioxide Adsorption Data on the AccuSorb HP: An Analysis of Zeolite and Carbon Materials
Introduction Carbon capture and storage (CCS) remains a critical area of scientific research as the impacts of climate change are observed globally each year. A primary driver of global warming is the increasing concentration of carbon dioxide in the atmosphere, which has risen steadily since the onset of global industrialization, primarily resulting from the combustion of […]
Materials Characterization Toolbox
Materials Characterization Toolbox Brochure
The Effectiveness Of TPR For Catalyst Characterization
Introduction Chemisorption is a critical analytical technique used to investigate the surface properties of solid materials, particularly in the field of catalysis. Unlike physisorption, which involves weak van der Waals forces and is typically reversible, chemisorption involves strong, specific interactions such as covalent or ionic bonding. These interactions often result in the formation of a […]
Pulse Chemisorption For Evaluating Metal Dispersion AndCatalyst Activity
Introduction Chemisorption is a powerful analytical method used to investigate the surface properties of solid materials, particularly catalysts. Unlike physisorption, which involves weak van der Waals interactions, chemisorption involves strong interactions such as covalent or ionic bonds. This interaction is highly specific, often irreversible, and only forms a monolayer. The interaction highly depends on the […]
ChemiSorb Auto
Automated chemisorption analyzer for essential catalyst characterization measurements
Minimum Surface Area Measurements with Micromeritics Physisorption Analyzers
A frequently asked question is “how much sample is required for a surface area analysis?” The simple answer is that it depends: it depends on the type of instrument being used for the measurement, and its accepted measurement tolerance; it depends on the type of sample tube being used for the measurement, which affects the […]
Introduction to Chemical Adsorption Analytical Techniques and their Applications to Catalysis
Abstract The chemical adsorption isotherm reveals information about the active surface of a material and has been employed for many years as a standard analytical tool for the evaluation of catalysts. Temperature-programmed reaction techniques have emerged from the 1950’s as an indispensable companion to chemisorption isotherm analyses in many areas of industry and research. This […]
The Heat of Adsorption of Hydrogen Gas on Lanthanum Pentanickel
by: Reid Davis Lanthanum pentanickel (LaNi5) is a metal alloy that, under the correct pressure and temperature conditions, will rapidly sorb hydrogen gas and form a metal hydride compound. Hydride forming metal compounds are well known for their ability to sorb large amounts of hydrogen gas at a specific pressure, store it, and later release […]
Diffusion of Nitrogen and Methane in Clinoptilolites – Tailored for N2/CH4 Separation
Ambalavanan Jayaraman and Ralph T. Yang* *Department of Chemical Engineering, University of Michigan Ann Arbor, Michigan 48109, USA Introduction Upgrading production from the aging natural gas wells by non-cryogenic separation of nitrogen from methane continues to be a topic of intense research. New nano-structured sorbent materials have been developed in the recent past for the […]
