脱硅重组装法制备
This presentation is the property of its rightful owner.
Sponsored Links
1 / 16

脱硅重组装法制备 ZSM-5/MCM-41 复合分子筛及其催化裂解性能研究 PowerPoint PPT Presentation


  • 71 Views
  • Uploaded on
  • Presentation posted in: General

脱硅重组装法制备 ZSM-5/MCM-41 复合分子筛及其催化裂解性能研究. CTAB Crystallize. Alkali Treatment. 报告人:那金丹 指导 老师:王莅 教授. 目前工作. 2011 年实验总结. 计划与展望. 报告内容. 2011 年实验总结. 椭圆形孔,直通道 0.51×0.53nm. 圆形 孔,弯曲通道 0.53×0.56nm. ≥ 1.5nm. ZSM-5. MCM-41. 优点:比表面积大 稳性 , 活性好 择形性 缺点:孔径小 阻碍扩散. 优点:孔径均一 , 可调 缺点:孔壁不定型 稳定性 ,

Download Presentation

脱硅重组装法制备 ZSM-5/MCM-41 复合分子筛及其催化裂解性能研究

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript


Zsm 5 mcm 41

脱硅重组装法制备ZSM-5/MCM-41复合分子筛及其催化裂解性能研究

CTAB Crystallize

Alkali Treatment

报告人:那金丹

指导老师:王莅 教授


Zsm 5 mcm 41

目前工作

2011年实验总结

计划与展望

报告内容


Zsm 5 mcm 41

2011年实验总结

椭圆形孔,直通道

0.51×0.53nm

圆形孔,弯曲通道 0.53×0.56nm

≥1.5nm

ZSM-5

MCM-41

优点:比表面积大 稳性,

活性好 择形性

缺点:孔径小 阻碍扩散

优点:孔径均一,可调

缺点:孔壁不定型 稳定性,

酸性差


Zsm 5 mcm 41

ZSM-5/MCM-41制备过程

主要工作:

CTAB Crystallize

Alkali Treatment

变量

影响

Amount of Silica source

NaOH Concentration

Crystallization Time

Thickness and PSD of MCM-41 shell


Zsm 5 mcm 41

Effect of NaOH Concentration

XRD

Fig.1 (A) Small-angle XRD patterns and (B) wide-angle XRD patterns of the ZSM-5/MCM-41 composite


Zsm 5 mcm 41

Effect of NaOH Concentration

BET & PSD

Table 1 Physicochemical properties of ZSM-5 and

Fig. 2 N2 adsorption-desorption isotherms (A) and pore size distributions (B) of ZSM-5 (a), ZMC-OH1.0-C12 (b), ZMC-OH1.5-C12 (c) and ZMC-OH- 2.0 -C12 (d)


Zsm 5 mcm 41

Effect of Crystallization Time

Fig.3 (A) N2 adsorption-desorption isotherms and (B) pore size distributions of a: ZSM-5, b: ZMC-OH1.5-C12, c: ZMC-OH1.5-C24, d: ZMC-OH1.5–C36,

e: ZMC-OH1.5–C48, f: ZMC-OH1.5–C60, g: ZMC-OH1.5–C72


Zsm 5 mcm 41

TEM images

b

a

15 nm

c

d

50 nm

18nm

Fig.4 TEM images for a: ZSM-5, b: ZMC-OH1.5-C12,

c: ZMC-OH1.5-C24, d: ZMC-OH1.5–C48


Zsm 5 mcm 41

Catalytic Cracking of n-dodecane

Temperature: 550 0C

Pressure: 4MPa

Fig.5 Conversion versus TOS for coatings of ZSM-5, ZSM-5/MCM-41and desilicated ZSM-5


Zsm 5 mcm 41

目前工作:不同模板剂制备ZSM-5/MCM-41复合分子筛

Fig. 6 (A) Small-angle XRD patterns and (B) wide-angle XRD patterns of the ZSM-5/MCM-41 composite prepared with different templates


Zsm 5 mcm 41

N2-adsorption

A

B

D

Fig. 7 N2 adsorption-desorption isotherms (A) and pore size distributions (B) of ZSM-5/MCM-41 samples

Fig. 8 pore size distributions of ZSM-5 /MCM-41 samples with single template (C) and dual-template (D)


Zsm 5 mcm 41

BET数据总结


Zsm 5 mcm 41

TEM images of samples

C10TAB

C12TAB

C14TAB

C12 & C16

C16TAB

C10 & C16


Zsm 5 mcm 41

谢谢!

请提出批评指正


Zsm 5 mcm 41

a

b

c

d

50 nm

50 nm


Zsm 5 mcm 41

e


  • Login