phân tích eclectron trong hóa phân tích phần 9 pptx

The uppermost spectrum was obtained following exposure of the sample to 10 tort of a~ter admission of 10 tort of 02 at 25 °C... The second spectrum was obtained immedialely ~ffFe.~ ~dmis

F=-

Wavenumber (cm -I }

1300

]aacl been calcined for 16 hrs at 300 °C and subsequently treated in H2 for 16 ]xrs at 300

°C The uppermost spectrum was obtained following exposure of the sample to 10 tort of

a~ter admission of 10 tort of 02 at 25 °C ~ e remaining spectra were then obtained at

76

e -

¢ _

r=,

s._

v

u

c -

o

Z

J

Wavenumber (cm "l)

m t

1300

16 hrs at 300 °C and subsequent])- treated in H2 for 8 hrs at 730 °C The uppermort spe~ruzn was obtained followin 8 exposure o f the sample ~o 10 tort o f NO for 15 rain, followed b s evacuadon The second spectrum was obtained i m m e d i a t d y after admission

' t ;

1-::-:.t: "

I-

~ - -

]~iI i~t:~]- =~!] -~, - t

I:

I

J

!

I"

!

- t : [

- _~ /J

=-_E z

~-:-:

~- ,

: ~ =-t

!

~ - I - I

1300

16 hrs at 300 =C and subseque_nt]y treated ~ ]]2 for 16 ]~'s at 730 °C Tb~e u ~ e r m o s t spectrum was obtained followhlg exposure of the sample to 10 tor~ of :NO-; for~15 rain, foI]owed by evacuation The second spectrum was obtained immedialely ~ffFe.~ ~dmissJon

in the continuing presence of gaseous Oz

?8

46

r-

0

m

L

O

>

C

O

O

40

O

O

+

C~

3 :

8g

80

0

dt

in

Q)

13 :1

o

m

JD

CO

m

L -

CO

in

In

@

U

0

13

S A - 9 9 - 0 8 8 8 (Ruhrchemle LP 33181)

250 °C

1.48 MPa

t

(H2/CO) = 0.67

2.0 NI/g-Fe.h

100 200 300 400 5 0 0

Time on stream (h)

i • |

8 0 0 700

FiB.re 2r, Stnbilily plot, (lira+CO) converdon vemls t|me on Jtre~m, for m 5A-09-0885

°E

4O 0

20.g

1£L0

13.0

C:'~.-C4 C5-~11

Ci2~-

I I = !

8.g 7.g

5.0 4,g 3.0

20

• 1,,0

O J:

=

4 9 9 5 157 284 ~ • 819

1:;2

I,, I

C4 C8

I C10

Figure 2~ F_~ecz of r~ae on ~reaan on R ~ h r ~ e m i e LP 33/81 se]ectis-it.v for run SA-99-08S$: 250

80

E n

i s

3:

~5.0 -

25J3-

2 ~ 3 - 15J3-

~,~,,~ - 5J3- 0J3

m

c12+

I

Temperature (° C)

7°F

.'~ m t

Temperature ~ C )

F i g ~ e 2T EKect oftemperatuze on Ru.l~'chemie LP 33/81 se]ecti%'hy lot l-u~ $A-99-08SS: 1.48 M P a ,

35.~-

Space Velochy (N1/g-cat-h)

E

~3

, 0 1 m

7.0-

I ~ l i ~ , - -

235 o C 250 o C

Space Velocity (Nl/g-cat-h)

CA¢

C 5 - ~ I

FJg~'e 2S Effect of space ve]ocit3" on ~ h ~ c h e ~ i e L P 33/81 selectivity f o r ru~ SA-99-0888:1.48

MPa, (H~./CO) = 0.6T

Gg7 ID0

r-

E

E

{3

3 S D -

3 a D -

2 5 D - :2OD-

I S D -

;r

ID0

~ 4

~ CA

CS C11

~ 2 ÷

1.48 MPa 2.96 MPa (H2/CO) Feed Ratio 7•

c3

cA

C~

~ 0 2.0-

I_0- I

nn

(H:~/CO) Feed Ratio

Figure 29 Effect of feed ratio and pressure on Ru~rc.hegfie LP 33/~ 1 selectivity for ru~ 5A-99-0888:

250 °C-

80

70

I::

O

~ m m

co

L -

r"

0

0

0

0

4 0

• O 0

O

O

l ( H 2 / ~ O ) = 1.0

Q

o

' " I , I i J i = I |

IN

n m

[]

FA-63-1308 (100 Fe/5 Cu/4.2 K/8 810 2)

235 eC ,

1.48 MPa

2,0 NI/g-Fe.h

N

Time on stream (h)

(H2/CO) = 0.67

mm dmuu uu un m i r a ,

• !

6 0 0

m

0 0 0

7QD

6QD 5QD

ZZD 1DD

O

I

~ 7

Time m St~rn ~)

BO

421

~ l~l~l~+J~:i~i~~

~ D I D ~

48 144 240 ~ ~ ~ R~I

Time c~ St~=m ~)

Fi~n'e 31 Effect o[ t ~ e o:~ stream on 100 Fe/5 Cu/4.2 K / 8 SiO2 c~t.~.vst se.]ecti~tv for Tan F A -

(s3;-528 h)