Table 1.

Factor levels in the Plackett–Burman design for MAOS AS101 synthesis.

	Key	High level (+)	Low level (−)	Unit
Method A
Power	X1a	90	50	watt
Pressure	X2a	7	3	bar
Time	X3a	30	10	minute
Method B
Power	X1b	80	50	watt
Temperature	X2b	120	80	°C
Time	X3b	20	10	minute