在带有输送煤样的管式反应器上进行了霍林河褐煤加压快速氢解实验,分析了H2对煤/半焦的化学键断裂和对CH4生成规律的影响。在加压快速氢解条件下,CH4产率随着热解温度升高、压力的增大而增大;在50%H2气氛下,操作压力为1.0 M Pa、温度为...在带有输送煤样的管式反应器上进行了霍林河褐煤加压快速氢解实验,分析了H2对煤/半焦的化学键断裂和对CH4生成规律的影响。在加压快速氢解条件下,CH4产率随着热解温度升高、压力的增大而增大;在50%H2气氛下,操作压力为1.0 M Pa、温度为900℃时,CH4产率为8.08%,达到最大,较N2气氛下的提高了72.5%。H2或H·自由基诱发了芳环的开裂、侧链、脂肪链和醚键的断裂,促进了煤热解。CH4产率的增加主要是由于外部供H的结果;热解温度低于700℃时,H2对煤结构中活性基团的作用促进了煤热解,导致了CH4产率的增加;而热解温度高于700℃后,煤/半焦加氢气化促进了CH4产率的增加。展开更多
A novel three dimensional fluorinated gallium phosphate has been hydrothermally synthesized by using diethylenetriamine as an organic structure directing agent. X ray single crystal structure analysis indicates this c...A novel three dimensional fluorinated gallium phosphate has been hydrothermally synthesized by using diethylenetriamine as an organic structure directing agent. X ray single crystal structure analysis indicates this compound crystallizes in the orthorhombic space group Pbca, a =1.605 6(7) nm, b = 1 011 4 (4) nm, c =1.854 6(5) nm, V =3.011 6(19) nm 3, Z =4. The three dimensional framework based on linkage of corner sharing polyhedron PO 4, GaO 4F and GaO 4F 2 delimit ten ring channels along b axis in which the triply protonated amines are located serving as charge compensating guests and supporters.展开更多
文摘在带有输送煤样的管式反应器上进行了霍林河褐煤加压快速氢解实验,分析了H2对煤/半焦的化学键断裂和对CH4生成规律的影响。在加压快速氢解条件下,CH4产率随着热解温度升高、压力的增大而增大;在50%H2气氛下,操作压力为1.0 M Pa、温度为900℃时,CH4产率为8.08%,达到最大,较N2气氛下的提高了72.5%。H2或H·自由基诱发了芳环的开裂、侧链、脂肪链和醚键的断裂,促进了煤热解。CH4产率的增加主要是由于外部供H的结果;热解温度低于700℃时,H2对煤结构中活性基团的作用促进了煤热解,导致了CH4产率的增加;而热解温度高于700℃后,煤/半焦加氢气化促进了CH4产率的增加。
文摘A novel three dimensional fluorinated gallium phosphate has been hydrothermally synthesized by using diethylenetriamine as an organic structure directing agent. X ray single crystal structure analysis indicates this compound crystallizes in the orthorhombic space group Pbca, a =1.605 6(7) nm, b = 1 011 4 (4) nm, c =1.854 6(5) nm, V =3.011 6(19) nm 3, Z =4. The three dimensional framework based on linkage of corner sharing polyhedron PO 4, GaO 4F and GaO 4F 2 delimit ten ring channels along b axis in which the triply protonated amines are located serving as charge compensating guests and supporters.
