Surface Reactions with Chemkin
 

Hi!

I want to do surface reaction and volumetric reactions in circular tube.But it must be catalytic reactions with Pt. I have find from detchem the code of Catalytic combustion of hydrogen, carbon monoxide, and methane on platinum and it is chemkin format is below. Can anyone help me to conversion this text to chemkin format to use in fluent. you can see data from http://www.detchem.com/
SITE/PT_SURFACE/ SDEN/2.72E-9/ PT(S) H(S) H2O(S) OH(S) CO(S) CO2(S) CH3(S) CH2(S) CH(S) C(S) O(S) END THERMO ALL 300.0 1000.0 3000.0 O(S) 92491O 1PT 1 I 300.00 3000.00 1000.00 1 0.19454180E+01 0.91761647E-03-0.11226719E-06-0.99099624E-10 0.24307699E-13 2 -0.14005187E+05-0.11531663E+02-0.94986904E+00 0.74042305E-02-0.10451424E-05 3 -0.61120420E-08 0.33787992E-11-0.13209912E+05 0.36137905E+01 4 O2(S) 92491O 2PT 1 I 300.00 3000.00 1000.00 1 0.35989249E+01 0.20437732E-02-0.23878221E-06-0.22041054E-09 0.53299430E-13 2 -0.41095444E+04-0.21604582E+02-0.20174649E+01 0.14146218E-01-0.16376665E-05 3 -0.11264421E-07 0.60101386E-11-0.25084473E+04 0.79811935E+01 4 H(S) 92491H 1PT 1 I 300.00 3000.00 1000.00 1 0.10696996E+01 0.15432230E-02-0.15500922E-06-0.16573165E-09 0.38359347E-13 2 -0.50546128E+04-0.71555238E+01-0.13029877E+01 0.54173199E-02 0.31277972E-06 3 -0.32328533E-08 0.11362820E-11-0.42277075E+04 0.58743238E+01 4 H2(S) 92491H 2PT 1 I 300.00 3000.00 1000.00 1 0.15330955E+01 0.34586885E-02-0.32622225E-06-0.36824219E-09 0.83855205E-13 2 -0.36401533E+04-0.10822206E+02-0.21517782E+01 0.87039210E-02 0.11154106E-05 3 -0.42477102E-08 0.96133203E-12-0.22640681E+04 0.97397461E+01 4 H2O(S) 92491O 1H 2PT 1 I 300.00 3000.00 1000.00 1 0.25803051E+01 0.49570827E-02-0.46894056E-06-0.52633137E-09 0.11998322E-12 2 -0.38302234E+05-0.17406322E+02-0.27651553E+01 0.13315115E-01 0.10127695E-05 3 -0.71820083E-08 0.22813776E-11-0.36398055E+05 0.12098145E+02 4 OH(S) 92491O 1H 1PT 1 I 300.00 3000.00 1000.00 1 0.18249973E+01 0.32501565E-02-0.31197541E-06-0.34603206E-09 0.79171472E-13 2 -0.26685492E+05-0.12280891E+02-0.20340881E+01 0.93662683E-02 0.66275214E-06 3 -0.52074887E-08 0.17088735E-11-0.25319949E+05 0.89863186E+01 4 PT(S) PT 1 S 300.0 3000.0 1000.0 1 0.00000000E+00 0.00000000E+00 0.00000000E+00 0.00000000E+00 0.00000000E+00 2 0.00000000E+00 0.00000000E+00 0.00000000E+00 0.00000000E+00 0.00000000E+00 3 0.00000000E+00 0.00000000E+00 0.00000000E+00 0.00000000E+00 4 CO(S) 0C 1O 1PT 1 I 300.00 3000.00 1000.00 1 0.47083778E+01 0.96037297E-03-0.11805279E-06-0.76883826E-10 0.18232000E-13 2 -0.32311723E+05-0.16719593E+02 0.48907466E+01 0.68134235E-04 0.19768814E-06 3 0.12388669E-08-0.90339249E-12-0.32297836E+05-0.17453161E+02 4 CO2(S) 081292C 1O 2PT 1 I 300.00 3000.00 1000.00 1 0.46900000E+00 0.62660000E-02 0.00000000E-00 0.00000000E-00 0.00000000E-00 2 -0.50458700E+05-0.45550000E+01 0.46900000E+00 0.62662000E-02 0.00000000E-00 3 0.00000000E-00 0.00000000E-00-0.50458700E+05-0.45550000E+01 4 C(S) 0C 1PT 1 I 300.00 3000.00 1000.00 1 0.15792824E+01 0.36528701E-03-0.50657672E-07-0.34884855E-10 0.88089699E-14 2 0.99535752E+04-0.30240495E+01 0.58924019E+00 0.25012842E-02-0.34229498E-06 3 -0.18994346E-08 0.10190406E-11 0.10236923E+05 0.21937017E+01 4 CH(S) 0C 1H 1PT 1 I 300.00 3000.00 1000.00 1 -0.48242472E-02 0.30446239E-02-0.16066099E-06-0.29041700E-09 0.57999924E-13 2 0.22595219E+05 0.56677818E+01 0.84157485E+00 0.13095380E-02 0.28464575E-06 3 0.63862904E-09-0.42766658E-12 0.22332801E+05 0.11452305E+01 4 CH2(S) 0C 1H 2PT 1 I 300.00 3000.00 1000.00 1 0.74076122E+00 0.48032533E-02-0.32825633E-06-0.47779786E-09 0.10073452E-12 2 0.10443752E+05 0.40842086E+00-0.14876404E+00 0.51396289E-02 0.11211075E-05 3 -0.82755452E-09-0.44572345E-12 0.10878700E+05 0.57451882E+01 4 CH3(S) 0C 1H 3PT 1 I 300.00 3000.00 1000.00 1 0.30016165E+01 0.54084505E-02-0.40538058E-06-0.53422466E-09 0.11451887E-12 2 -0.32752722E+04-0.10965984E+02 0.12919217E+01 0.72675603E-02 0.98179476E-06 3 -0.20471294E-08 0.90832717E-13-0.25745610E+04-0.11983037E+01 4 END ! !!************************************************ ******************************! !!********* CH4-O2 Surface Reaction on Pt **********! !!************************************************ ******************************! REACTIONS JOULES/MOLE H2 + 2PT(S) => 2H(S) 4.4579E+10 0.5 0.0 FORD/PT(S) 1/ 2H(S) => H2 + 2PT(S) 3.70E+21 0.00 67400.0 COV/H(S) 0.0 0.0 -6000.0/ H + PT(S) => H(S) 1.00 0.0 0.0 STICK O2 + 2PT(S) => 2O(S) 1.80E+21 -0.5 0.0 DUPLICATE O2 + 2PT(S) => 2O(S) 0.023 0.00 0.00 DUPLICATE STICK 2O(S) => O2 + 2PT(S) 3.70E+21 0.00 213200.0 COV/O(S) 0.0 0.0 -60000.0/ O + PT(S) => O(S) 1.00 0.0 0.0 STICK H2O + PT(S) => H2O(S) 0.75 0.0 0.0 STICK H2O(S) => H2O + PT(S) 1.0E+13 0.00 40300.0 OH + PT(S) => OH(S) 1.00 0.0 0.0 STICK OH(S) => OH + PT(S) 1.0E+13 0.00 192800.0 H(S) + O(S) = OH(S) + PT(S) 3.70E+21 0.00 11500.0 H(S) + OH(S) = H2O(S) + PT(S) 3.70E+21 0.00 17400.0 OH(S) + OH(S) = H2O(S) + O(S) 3.70E+21 0.00 48200.0 CO + PT(S) => CO(S) 1.618E+20 0.5 0.0 FORD/PT(S) 2/ CO(S) => CO + PT(S) 1.00E+13 0.00 125500.0 CO2(S) => CO2 + PT(S) 1.00E+13 0.00 20500.0 CO(S) + O(S) => CO2(S) + PT(S) 3.70E+21 0.00 105000.0 CH4 + 2PT(S) => CH3(S) + H(S) 4.6334E+20 0.5 0.0 FORD/PT(S) 2.3/ CH3(S) + PT(S) => CH2(S) + H(S) 3.70E+21 0.00 20000.0 CH2(S) + PT(S) => CH(S) + H(S) 3.70E+21 0.00 20000.0 CH(S) + PT(S) => C(S) + H(S) 3.70E+21 0.00 20000.0 C(S) + O(S) => CO(S) + PT(S) 3.70E+21 0.00 62800.0 CO(S) + PT(S) => C(S) + O(S) 1.00E+18 0.00 184000.0 END !!endofreactionset endofreactionset endofreactionset endofreactionset endofreacti

Hi silverra1n,
can you please help me if you have found any information on this matter?

Hi!
if you give your mail i can send chemkin format this reactions.

kostis217@hotmail.com

many thanks

I send a mail ;)

i have received your email, thank you very much

hi silverra1n once again :) ,

my prof was very pleased with the files you send me and the model i showed him. but he initially wanted catalytic combustion of propane. i found at detchem.com a mechanism of propane-Rh, it is in chemkin format like the ones you send me.is it posssible me for me to save the propane-rh at notepad as .che file and imported as a surface mechanism into fluent. or there is another way? thanks in advance, hopefully this is my last i tire you with my prob.

Hi!

You can change over your .che file what ever you want then you can save and run. but if you can't do when i have time i will look for you and send ;)

thanks, i will try to edit the notepad and import it to fluent.

ok. if you can't do say me and i can try ;)

hi silverra1n,
i have edited a notepad file and imported it to fluent. can i send you the files, so that you can tell me your opinion? at fluent there was no problem except from a term 'MWOFF' which fluent couldn't read so i deleted it.

Hi!

You can send me and i can check it for you. But i couldn't understand 'MWOFF' because i didn't see like this error message.

Regards.

i have sent an email. MWOFF is a mode for chemkin use only thats why fluent cant read it so i deleted and the error ceased to exist.

hi silverran,
do you know if we consider catalytic combustion of methane on Pt a flameless combustion ? i have recently found a paper mentioning this, is it true?

Hi silverra1n Sir,

Can you please send me the code sudeepns.197me025@nitk.edu.in

It would be very much helpful for me to understand the process and proceed further.

Thank you very much and looking forward for your mail.