Kiawah Island - Physical Feature (Island) in Charleston County. Kiawah Island is a physical feature (island) in Charleston County. The primary coordinates for Kiawah Island places it within the SC 29455 ZIP Code delivery area. In the Maps and Aerial Photos section below, you'll find links to: (1) Local area photos around Kiawah Island, (2) A listing of the nearest hotels to Kiawah Island and (3) Driving Directions to Kiawah Island from almost anywhere. The location of Kiawah Island is marked on an interactive map.
A three-way catalytic converter makes use of two catalysts to convert harmful gases to harmless gases. They are: 1  Reduction Catalyst and. 2  Oxidation Catalyst.he gases that finally come out of the catalyst chamber are N 2, CO 2, and H 2 O. 3-way catalytic converters are so named because they are capable of eliminating three pollutants â NO x, CO and HC.
Most modern cars are equipped with three-way catalytic converters. This refers to the three regulated emissions it helps to reduce. Â­The reduction catalyst is the first stage of the catalytic converter. It uses platinum and rhodium to help reduce the NOx emissions. When an NO or NO2 molecule contacts the catalyst, the catalyst rips the nitrogen atom out of the molecule and holds on to it, freeing the oxygen in the form of O2.