>>155704
Traces of HVK and DVK were detected in the liquid-phase product. It was speculated that HVK came from aldol condensation between MVK and formaldehyde. DVK was generated from dehydration of HVK. The mass fractions of HVK and DVK during HB synthesis from 523.15 K to 563.15 K and 17 MPa were detected, whose maximums were around 2.3 and 7.8 ppm, respectively (less than 0.003 and 0.015 wt % of raw formaldehyde in the feed).