There are different types of gas purifiers available on the market, each designed to target specific impurities and contaminants. Some common types of gas purifiers include adsorption filters, catalytic converters, and membrane filters. Adsorption filters work by trapping impurities on a solid surface, while catalytic converters use chemical reactions to convert contaminants into harmless substances. Membrane filters, on the other hand, rely on a semi-permeable membrane to separate impurities from gases.