The method 1 wherein providing {HEAD ~ a reactor} further comprises providing a reactor having catalytic material in or on the inner surfaces of the first plurality of {TAIL ~ cells} 
The method 1 wherein providing { HEAD ~ a reactor } further comprises providing a reactor having catalytic material in or on the inner surfaces of the first plurality of { TAIL ~ cells }
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL