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(1)Br

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Title: Author: admin Last modified by: admin Created Date: 9/12/2005 5:58:19 AM Document presentation format: – PowerPoint PPT presentation

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Title: (1)Br


1
??? ???????????
?????????????????????????????????,???????????????
??
??????????????
???????????????????????????????????????
1.1 ?????????? 1?????? (1)Brönsted????????????Brö
nsted?(B?)??????????????Brönsted?(B?)?
2
NH3 H3O ? NH4 OH-
??? H3O ?B?, NH3?B? ??? NH4
?B?,OH-?B?? ?????BH-BBH ? B H
(2)Lewis?????????????Lewis?(L?)???????????Lewis
?(L?)? BF3 NH3 ? BF3?NH3
BF3L? NH3L?
BF3?NH3?????-L??L???????
3
2??????? (1)???B??L???????????????????
HZSM-5-773 K
??-HZEM-5-773 K
??-HZEM-5-1073 K
??????? ?????B???????1540 cm-1
?????L????????1447 - 1460 cm-1?
4
(2)???????????????,??????? ??????????????????/??
?? ?????? H0????Hammett?????B?
???????/?B????????????L?????????/?L???????????????
????????????????????????? ??? ?
????-??? ??(???)
??(???) ?????BH ? B H
??
H0 gt pKa??????
?
H0 lt pKa??????
5
????????,?????????(pKa ?),????????????????????(
pKa ?),??????????????,?????H0 ? lt H0 lt ??
6
100H2SO4H0 -11.9 ???H0 lt -12??,?FSO3H?SbF3(
H0-18-20)TiO2-SO42-?ZrO2-SO42-?Fe2O3-SO42-?SnO2
-SO42-?????H0??-13???
L???
?????????????????????????,??????????
(3)???????????,???????????????????????????????
7
???????????????,?????????????????????????????(pKa
)???????????,??????????????????,??????????????????
???,??????H0 lt pKa???????
???????????????,???????????????????
8
1.2 ?????? 1?????????????????? 2?????H2SO4,H3PO4
???????????????? 3?????????SiO2-Al2O3?SiO2-TiO2??
SiO2-ZrO2? 4???????CuSO4?MgSO4?CaSO4??
1.3 ??????? ?????????????????? SiO2-Al2O3?????????
???Si-O???????Al? ???????L???????????????Al?
9
A???B??? C???B????
1.4 ??????? 1???????????????????B???,??????L???,?
???????B??L???? ????????????B?????
???????L????? ???????????B??L????
10
????????????????/?????????????????? 2????????????
????
? ?
????
??
???
??
?????
3??????????? ????,???????????????,????????????????
?
11
??????
????????? ????733-773 K ??10?104 20?104 Pa
?????????????
12
???????????????,??????????????
2.1 ????? ??????????????? ?????????(??)??? ????
????????-???????????????????
13
1?????????SiO2-Al2O3??????? SiO2??B?,??L?,?????
Al2O3?????B??,??L?? ???????????,?????????? ????
???? ????????,????????,SiO4?????Si-O-Si??????,?
????3-5nm??????
14
????????????,????????????
???????????,?????????,?????-????????,????3-5nm?
15
???-??????????????SiO2-Al2O3??, SiO2 -
Al2O3????????Al-O-Si??,?????????????
SiO2-Al2O3??????SiO2-Al2O3?????,??????????? SiO2-
Al2O3?????????????????????????200600m2/g,????????
??????? ????????????B??L?(???Al??)
????????????L?,?????????????,?????,????????B?
?????Al3??????Si4,????????,??????????H??B???
???????????????,??????Al??L????
16
Thomas??????????????????????????????????????? (1
)?????????,?????,?SiO2-Al2O3?SiO2-MgO (2)???????,
??????,?Al2O3-B2O3? ??SiO2-Al2O3????1025??????
13???????????,?25????????????????????20,?B?????
?,??Al-O-Al??????
17
2????????????SiO2-Al2O3???,???????????,?????????
????Mj/n(AlO2)j(SiO2)y?xH2O M
??????? j????????
y???????? x?????????
???????????????????Y???? (1)????????????????????
??
18
???????????,?AlO4????????,?????SiO4???????????
??,??????????????????????????????????
19
???????,?????????????? ??????????????????????
??????????????????????????,????????????? ?????
????? ???????,????????1.2nm?0.66nm?0.26nm?????????
??????? ???????????X???(SiO2/Al2O32.23.0)?Y???(
SiO2/Al2O33.15.0 )? AlO4??????????????????????
?????????????????
20
?4????????? I??????,??????16?I?? I???I?,?????,
???????32?I?? II??????????????????? II?II??,?
????????????32?II?II? ???????????112?,???????
????????????,??????,??????????????????????????????
?????
21
???????????????????????????,????????????
??????? 0.67?0.7 nm2
??????????????,???????????????????????????????????
??,???????????,??????????
22
(2)????????????,?????B??L?? B????????????Y???????
3650cm-1?????,????,?????,????????
3550cm-1?????,????,?????????,????????????
3650cm-1?????,????,?????,???????? ????????? 1)???
??? 2)??????? ??CaY?MgY? REY????
23
La3 ions in zeolite-Y polarize their hydration
shells so much that (LaOH)2 ions together with
free protons, loosely attached to the
framework, are formed. The (LaOH)2.H? -O?-
complex constitutes the active acid sites in La-Y
????????REY??B???
?????REY????????,???????????????,?????????????????
????
24
???L?????????????????L????? ???????????????????
????,?????????,??L???,????????????
(3)???????? ?????????(10??)??SiO2-Al2O3??????????
SiO2-Al2O3????????????????????????????????,??????
?????????????????????????
25
2.2 ?????? ????,??????????????????????????????????
??,???C-C????,???????,??????????????????? (1)????
?????,??????????? ?????????????????? ??????????
??? ??????,???????? (2)??????????????? ????????
???? ???? ????????????? ???
26
?????,???????????,???????
27
1???? ????????,????1015,???2030??????????,?
?????????????????????????? ??????????? (1)???C-
C????? ?????? (2)????????????????????,????H3C?
?????????????????
28
(3)???H3C??????????????,???????????,?????????????
? ??????????????????????????? ???????????????
????? ????????????,??????????,???????????????????
??,?????????????????????????????????????????????
??
29
2????? (1)?????????????????????????????????????,?
????????? ????????????????????????????????????,???
???,?????????? ???????????????????? 1)???????????
? 2)????,????????????????????????????????????????
????????????? (2)??????? 1)???B???????????,???????
???????sp2???????
30
???????,???B??????????,?????????
2)???B???
31
3)???????? ????B????,???????????,?????????????????
???,??????????? L?????H-??????
RH L ? R LH-
32
(3)???????? ?????????????? ??????????
????? gt ????? gt ????? gt ?????
???E?????????????,E???,???????????????,?????????
???? ???????????,?????,?????????????????,????????
????????,??????
33
(4)??????? 1)??????????????,?????????????????????
? ???? ????
34
2)?????
??????????
?????????????
????????????????
???????????????,??????
??????????????
35
3)????????? ?????????????,????????,????????
(5)????? 1)????? ????????????,??????
36
????????????????,????????????,????????????????
37
????????????????? ??????????????????????????????
??????????? ????????????
????(??A)????????????????????????RH????,R???????
???,?????????????? RH
R1 ? R R1H ????
R ? ? R2
?????(??B)?????????????? ???????????????????
???
H??
???
38
??????????????????????????????,??????????? ?????
?????????????????????,??????????????,????????????(
?????)?
2)????????????????????????,??????????,???????????
??????????????????????????H-??????? ??????????????
?????H-????????,??????????????????? ???C2C5??????
????????,?????????,?????????
39
3)????????????????????C5?C6??????????????????????
????? ?????????????????????????????????????????,??
????????????,?????????
4)???????????????,????????????,???????(????,?????
??)? ?????????????????????????????????????,???????
???,???????????????????????????,???????????????,??
??????,????????????????????,????????????????????,?
??????????????
40
????
????
????
?? ???
41
(6)?????? 1)????????? ????,????????????????????? ?
??????????????????-????,???????????
??????????????????????????,?????
?????????????????
42
2)????????????????????? ?????????-??,??????,?????
?????????,?????????????,???????????H-?????????? ??
??????????????????,????????????,???,???????? ?????
?,?????????,??-????,??????????????????????????????
?,??????????? ????????????????????????????? ??????
?????? ???????????????,??????????????????????
43
(7)???? ??-???????????????? ?????Voorhies??
CC????????n?A???t???? ???????????????,???C?H???
?N?O??S????C/H?0.6??? B???????????L????????????? ?
???,??????????????? ??????????,?Fe?Cu????????? ???
??????????????????????????????????????????,??C6
???????????? ????????????,???????????????????
44
(No Transcript)
45
(8)????????????? ????????,????????????? ????
???? 1)???????????????????? 2)??????????????,???
??????????,???????? 3)???AlO4-?????????????????
???????,?????????????
46
??????????????,????????,????? ???????????????
????????
47
????????????????????????????????????????
1 ??
r1
R
RH
r2
2 ???
?????????
???????????
48
??????
3.1 ?????????????????????????????,????????????? ?
????????????????,???????? 1??????????????????,???
?????????????????????????????? 2?????????????????
,????????????????????????,????????????? 3?????????
??????????????????,????????????
49
??????
?????
????????
50
3.2 ZEM-5??????????????????????????????? ZEM?????
?????? ??,????????? ????????????? ?,????????,??
?????????? ????0.54nm?
(0.7-0.07)nm ?????0.55 nm
51
HR-TEM of ZSM-5
52
ZEM-5?????? 1)?????????????,ZEM-5????????????????
?? 2)??????,????,????? 3)?????????????????,?????
????? 4)?????????,??????????????????,?1-2????Y
??????5-6??? 5)?????????????????? 6)????????????
??,???????????????????,?????????????,?????????
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