Precious metal catalyst chu eng nge ni?

Precious metal catalyst-ah hian a hming ang bawkin active ingredient atan hian precious metals an hmang a, alumina ang chi monolithic ceramics chu support atan an hmang bawk. Anni hi chemical reaction rate tihdanglamna atana siam catalyst an ni a, chu chu reaction-ah ngei pawh tel lovin an siam a ni.

Precious metal catalyst chu thil hlu tak, chemical reaction rate a thlak danglam thei a, a tawp berah chuan a tel lo. Thil hlu zawng zawng deuhthaw hi catalyst atan hman theih a ni a, mahse platinum, palladium, rhodium, silver, leh ruthenium te hi hman a ni tlangpui a, platinum leh rhodium te hi hman tam ber an ni. An d-electron orbital te hi a khat kim lo va, an chunglam chu adsorbing reactants nei thei turin a siam a ni. Heng orbital te chakna tlemte hian intermediate "active compounds" siam a ti awlsam a, chu chuan catalytic activity sang tak a siam a ni. Chubakah, high{5}}temperature resistance, oxidation resistance, leh corrosion resistance te ang chi comprehensive property tha tak tak an nei a, hei vang hian catalyst material pawimawh ber an ni.