The catalyst 1, wherein the alkali metal atoms are a mixture of atoms of lithium and at least one atom selected from {HEAD ~ the group} consisting of sodium, potassium, rubidium, {TAIL ~ cesium} and francium 
consisting of
The catalyst 1 , wherein the alkali metal atoms are a mixture of atoms of lithium and at least one atom selected from { HEAD ~ the group } consisting of sodium , potassium , rubidium , { TAIL ~ cesium } and francium
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH