张放, 傅吉全. 炭化工艺对酚醛树脂基碳分子筛性能的影响[J]. 工业催化, 2016,24(3): 54-57.
Zhang Fang, Fu Jiquan. Influence of carbonization process on the performance of phenolic resin based carbon molecular sieve[J]. Industrial Catalysis, 2016,24(3): 54-57.
Influence of carbonization process on the performance of phenolic resin based carbon molecular sieve
Zhang Fang, Fu Jiquan*
School of Materials Science & Engineering, Beijing Institute of Fashion Technology, Beijing 100029, China
Abstract
Using commercial phenolic resin(PF) as the carbon source,F127 triblock polymer as the template,the carbon molecular sieve was prepared.The effects of carbonization preparation technology on pore size distribution of carbon molecular sieve were investigated.The as-prepared samples were characterized by N2 adsorption-desorption.The results showed that the carbonization temperature,carbonization time,heating rate had great influence on the pore size distribution of the carbon molecular sieve.Under the preparation condition of carbonization rate 1 ℃·min-1,carbonization temperature 800 ℃ and carbonization time 1 h,the pore size distribution of the carbon molecular sieve was the most concentrated,BET surface area, total pore capacity of a single point,and microporous volume of a single point adsorption were 716.59 m2·g-1 , 0.557 75 cm3 ·g-1 and 0.301 81 cm3·g-1,respectively.
图 1 不同炭化温度炭化样品的N2吸附-脱附等温线和HK孔径分布曲线Figure 1 N2 adsorption-desorption isotherms and HK pore size distribution curves of the samples carbonized at different temperatures
表 1
Table 1
表 1(Table 1)
表 1 不同炭化温度炭化样品的孔隙结构参数Table 1 Pore structure parameters of the samples obtained at different carbonization temperatures
样品
炭化温度/℃
比表面积/m2· g-1
单点总孔容/cm3· g-1
单点吸附微孔孔容/cm3· g-1
平均孔径/nm
1
700
497.88
0.361 51
0.207 68
1.45
2
800
716.59
0.557 75
0.301 81
1.56
3
900
487.89
0.319 54
0.202 99
1.31
表 1 不同炭化温度炭化样品的孔隙结构参数Table 1 Pore structure parameters of the samples obtained at different carbonization temperatures
图 2 不同炭化时间炭化样品的N2吸附-脱附等温线和HK孔径分布曲线Figure 2 N2 adsorption-desorption isotherms and HK pore size distribution curves of the samples carbonized at different time
表 2
Table 2
表 2(Table 2)
表 2 不同炭化时间炭化样品的孔隙结构参数Table 2 Pore structure parameters of the samples obtained for different carbonization time
样品
炭化时间/h
比表面积/m2· g-1
单点总孔容/cm3· g-1
单点吸附微孔孔容/cm3· g-1
平均孔径/nm
1
1
716.59
0.557 75
0.301 81
1.56
2
2
680.71
0.506 93
0.276 63
1.49
3
3
484.96
0.336 26
0.197 96
1.39
表 2 不同炭化时间炭化样品的孔隙结构参数Table 2 Pore structure parameters of the samples obtained for different carbonization time
图 3 不同炭化升温速率炭化样品的N2吸附-脱附等温线和HK孔径分布曲线Figure 3 N2 adsorption-desorption isotherms and HK pore size distribution curves of the samples carbonized at different heating rate
表 3
Table 3
表 3(Table 3)
表 3 不同炭化升温速率炭化样品的孔隙结构参数Table 3 Pore structure parameters of the samples carbonized at different heating rate
样品
升温速率/℃· min-1
比表面积/m2· g-1
单点总孔容/cm3· g-1
单点吸附微孔孔容/cm3· g-1
平均孔径/nm
1
1
716.59
0.557 75
0.301 81
1.56
2
2
430.33
0.298 03
0.175 46
1.39
3
3
418.98
0.333 47
0.177 14
1.59
表 3 不同炭化升温速率炭化样品的孔隙结构参数Table 3 Pore structure parameters of the samples carbonized at different heating rate