TABLE 3.

Weight loss rates for all samples at different temperature ranges.

Samples	Temperature/°C
	Weight loss ratio/%
	Stage a	Stage b	Stage c	Stage d
BS	33–210	210–700	700–1,000	/
	4.85	90.81	4.34	/
SO4 2-/TiO2	33–210	210–380	380–1,000	/
	3.67	82.87	13.46	/
SO4 2-/Fe2O3	33–210	210–380	380–1,000	/
	3.39	80.23	16.38	/
SO4 2-/ZrO2	33–210	210–380	380–1,000	/
	2.93	80.66	16.41	/
SO4 2-/SnO2	33–210	210–380	380–700	700–1,000
	3.34	71.79	11.12	13.75
PTA	33–210	210–355	355–830	830–1,000
	4.74	53.70	22.64	18.92
SPA	33–210	210–315	315–820	820–1,000
	2.87	37.04	24.25	35.84