Desirably, {TAIL ~ the oxygenate} containing feedstock is contacted with the silicoaluminophosphate catalyst in a reactor at an average gas superficial velocity of {HEAD ~ greater than 1 meter} per second 
Desirably , { TAIL ~ the oxygenate } containing feedstock is contacted with the silicoaluminophosphate catalyst in a reactor at an average gas superficial velocity of { HEAD ~ greater than 1 meter } per second
OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH