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21Coalbed methane — (CBM) or Coal Bed Methane[1], coalbed gas or coal mine methane (CMM) is a form of natural gas extracted from coal beds. In recent decades it has become an important source of energy in United States, Canada, and other countries. Australia has… …
22Thermal desorption spectroscopy — (TDS), also known as temperature programmed desorption (TPD) is the method of observing desorbed molecules from a surface when the surface temperature is increased. Many researchers prefer the name TPD because it is not a spectroscopic… …
23Heterogeneous catalysis — is a chemistry term which describes catalysis where the catalyst is in a different phase (ie. solid, liquid and gas, but also oil and water) to the reactants. Heterogeneous catalysts provide a surface for the chemical reaction to take place on.… …
24Desorption — is a phenomenon whereby a substance is released from or through a surface. The process is the opposite of sorption (that is, either adsorption and absorption). This occurs in a system being in the state of sorption equilibrium between bulk phase… …
25Carbon in pulp — (CIP) is a technique for recovery of gold which has been liberated into a cyanide solution as part of the gold cyanidation process, a gold extraction technique.Introduced in 1985, Carbon in Pulp is regarded as a simple and cheap process. As such… …
26Pressure swing adsorption — (PSA) is a technology used to separate some gas species from a mixture of gases under pressure according to the species molecular characteristics and affinity for an adsorbent material. It operates at near ambient temperatures and so differs from …
27Sorptivity — John Philip (1957) described sorptivity as a measure of the capacity of the medium to absorb or desorb liquid by capillarity . Calculation of the true sorptivity required numerical iterative procedures dependent on soil water content and… …
28Sorption pump — The sorption pump is a vacuum pump that creates a vacuum by adsorbing molecules on a very porous material like molecular sieve which is cooled by a cryogen, typically liquid nitrogen. The ultimate pressure is about 10 2 mbar. With special… …
29DART ion source — A capsule being analyzed is held in the sample chamber between the DART ion source (right) and the spectrometer inlet (cone on left). DART (Direct Analysis in Real Time) is an atmospheric pressure ion source that instantaneously ionizes gases,… …
30Matrix-assisted laser desorption electrospray ionization — Schematic of a typical MALDESI setup Matrix assisted laser desorption electrospray ionization (MALDESI) is a method for creating ions that can be used for chemical analysis in a mass spectrometer.[1] It is related to desorption electrospray… …
