Description
This class provides for (1) a mixture of materials intendedto catalyze a reaction or to sorb a component of a fluid or (2)certain single materials specifically structured to catalyze a reactionor sorb a component.
In this class, many subclasses are based on the groupingsof elements in the periodic chart. Below are listed elements inthe group as used in the class.
Group I metals: Lithium(Li), Sodium(Na), Potassium(K), Rubidium(Rb),Cesium(Ca), Francium(Fr), Copper(Cu), Silver(Ag), and Gold(Au)
Group II metals: Beryllium(Be), Magnesium(Mg), Calcium(Ca),Strontium(Sr), Barium(Ba), Radium(Ra), Zinc(Zn), Cadmium(Cd), andMercury(Hg)
Group III: Scandium(Sc), Ttrium(Y), Aluminum(Al), Gallium(Ga),Indium(In), and Thallium(Tl)*
Group IV: Titanium(Ti), Zirconium(Zr), Hafnium(Hf), Germanium(Ge),Tin(Sn), and Lead(Pd)
Group V metals: Vanadium(V), Niobium(Nb), Tantalum(Ta), Arsenic(As),Antimony(Sb), and Bismuth(Bi)
Group VI metals: Chromium(Cr), Molybdenum(Mo), Wolfram(W),Tungsten(T), and Polonium(Po)
Group VII metals: Manganese(Mn), Technetium(To), and Rhenium(Re)
Group VIII: Iron group metals, Iron(Fe), Cobalt(Co), Nickel(Ni),and the platinum group metals, Ruthenium(Ru), Rhodium(Rh), Palladium(Pd),Osmium(Os), Iridium(In), and Platinum(Pt)
Lanthanides: Elements with atomic numbers 57-71 inclusive,Lanthanum(La), Cerium(Ce), Praseodymium(Pr), Neodymium(Nd), Promethium(Pm),Samarium(Sm), Europium(Eu), Gadolinium(Gd), Terbium(Tb), Dysprosium(Dy),Holmium(Ho), Erbium(Er), Thulium(Th), Ytterbium(Yb), and Lutetium(Lu)
Alkaline earth metals: Calcium(Ca), Strontium(Sr), Barium(Ba),and Radium(Ra)
Alkali metals: Lithium(Li), Sodium(Na), Potassium(K), Rubidium(Rb),Cesium(Cs), and Francium(Fr)
Actinides: Elements with atomic numbers 89 and above inclusive,Actinium(Ac), Thorium(Th), Protactinium(Pa), Uranium(U), Neptunium(Np),Plutonium(Pu), Americium(Am), Curium(Cm), Berkelium(Bk), Californium(Cf),Einsteinium(Es), Fermium(Fm), Mendelevium(Md), Nobelium(No), Lawrencium(Lr)*
Halogens: Fluorine(F), Chlorine(Cl), Bromine(Br) Iodine(I),and Astatine(At)
Lithium(Li), Sodium(Na), Potassium(K), Rubidium(Rb), Cesium(Cs),and Francium(Fr)
Rare earth: Scandium(Sc), Yttrium(Y), and Lanthanide group
* La is grouped with the Lanthanides and Ac withthe Actinides.