recovered the overhead fraction was analyzed by gas chromatography gc and found to contain about 20 wt linears and 80 wt mixed cyclics of primarily d 4 d 5 with the rest of the cyclics being primarily d 6 d 7 the overhead stream with 79 8 u201c volatiles u201d a mixture of primarily cyclics and some linears was used as the feed stream for examples 2 10 the m stopped hydrolyzate feed from example 1 was pumped at the rate of 1 3 to 5 4 g min through a preheater maintained at about 35 to 55 u00b0 c followed by a single pass through a packed bed reactor containing about 100 grams of filtrol 25 bentonite acid leached granules catalyst at a bed temperature of either 35 45 or 55 u00b0 c the residence time of the rearrangement reactor was controlled by the pump rate the product exiting the reactor was analyzed by gas chromatography gc using a thermal conductivity detector tcd for volatile content i e indicator of cyclic presence viscosity and weight loss at 150 u00b0 c hour in these examples the product exiting the reactor was stripped at about 150 u00b0 c at 5 mm hg to reduce the volatiles cyclics content to less than or about 3 wt the material recovered from the receiver was re used as feed to the rearrangement reactor by blending with the hydrolyzate feed of example 1 at.