Publication nitrogen ratio

Some older publications deal with the influence of catalyst granulation on the optimum reducing conditions [349], Directions for reduction in multibed converters that combine fine- and coarse-grained catalyst appear in [350]. The influence of the hydrogen/nitrogen ratio during reduction on the catalyst performance after reduction is discussed in [351],... 

Two publications have appeared on the use of n.m.r. to determine the site of protonation (or protonation ratios) in pyrimidines. Three-bond coupling, e.g. decreases markedly across quaternized nitrogen, as shown... 

In commercial applications probably the platinum catalyst most widely known to the general public is that used in the automobile catalytic converter, which currently accounts for approximately 60% of U.S. platinum usage. The two-way converter, used between 1975 and 1980 to remove carbon monoxide and hydrocarbons, is a Pt-Pd catalyst with roughly a 7 3 ratio of metal. In 1980, the three-way catalyst (Pt-Pd-Rh or Pt-Rh), which removes carbon monoxide, hydrocarbons and nitrogen oxides, was introduced. It is well documented that lead has significant effects on the catalyst, from changing product selectivity... 

---