Activated charcoal and zeolites are both categorized by having pores equal to or smaller than what size?
Nanoporous materials Nanoporous materials consist of a regular organic or inorganic framework supporting a regular, porous structure. The size of the pores is generally 100 nanometers or smaller. Most nanoporous materials can be classified as bulk materials or membranes. Activated carbon and zeolites are two examples of bulk nanoporous materials, while cell membranes can be thought of as nanoporous membranes.
Fish Canyon Tuff The Fish Canyon Tuff is the large volcanic ash flow deposit resulting from one of the largest known explosive eruptions on Earth, estimated at 5,000 cubic kilometers. (see List of largest volcanic eruptions) The eruption was centered at La Garita Caldera in southwest Colorado. The tuff can be assured to belong to one eruption due to its high chemical consistency (SiO=bulk 67.5–68.5% (dacite), matrix 75–76% (rhyolite) and consistent phenocryst content (35–50%) and composition (plagioclase, sanidine, quartz, biotite, hornblende, sphene, apatite, zircon, Fe-Ti oxides are the primary phenocrysts). This tuff and eruption is part of the larger San Juan volcanic field and Mid-Tertiary ignimbrite flare-up.