Sample

Crystallinity

mass fraction/%

Na₂O

Al₂O₃·3H₂O

Al₂O₃

Solid

SiO₂

PB1

60

0.22

1

93.8

67.9

0.27

PB2

61

0.02

1

93.3

76.8

0.23

PB3

62

0.28

1

95.2

67.2

0.24

PB4

60

0.26

1

94.1

69.3

0.27