A New Approach to Determine Gas Diffusion Coefficients in Porous Solids by EIS: Application for NH<sub>3</sub> and CO<sub>2</sub> Adsorption on Zirconia and Zeolite Type 5A

<table class="fixed-width table-group" id="tab2"><tr><td><table class="table"><colgroup><col style="width:11.59em"/><col style="width:3.58em"/><col style="width:4.05em"/></colgroup><tr><td class="thead-hr" colspan="3"><hr/></td></tr><tr class="thead"><td class="align_left"> </td><td class="align_center">0 min</td><td class="align_center">20 min</td></tr><tr><td class="thead-hr" colspan="3"><hr/></td></tr><tr><td class="align_left">Stagnant gas layer <svg height="12.5318pt" id="M43" style="vertical-align:-3.29565pt" version="1.1" viewbox="-0.0498162 -9.23615 10.1377 12.5318" width="10.1377pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"><g transform="matrix(.013,0,0,-0.013,0,0)"><path d="M238 0V26C174 32 166 38 166 104V712C132 700 70 683 18 677V653C81 647 87 645 87 577V104C87 38 78 32 15 26V0H238Z" id="g121-106"></path></g><g transform="matrix(.0091,0,0,-0.0091,3.289,3.132)"><path d="M327 325C324 350 312 408 304 433C283 442 256 451 213 451C120 451 59 391 59 320C59 243 125 210 188 181C237 158 266 136 266 93C266 52 231 24 195 24C134 24 93 81 74 148L42 143C42 106 51 37 59 23C78 8 125 -12 177 -12C257 -12 345 35 345 127C345 198 292 234 216 264C171 283 131 305 131 348C131 387 156 416 195 416C243 416 277 378 297 317L327 325Z" id="g58-113"></path></g><g transform="matrix(.0091,0,0,-0.0091,6.665,3.132)"><path d="M303 37L293 66C280 59 256 49 231 49S173 63 173 143V396H281C294 404 298 428 287 439H173V575L158 577L92 509V439H46L17 408L22 396H92V107C92 27 128 -12 192 -12C203 -12 218 -9 237 2L303 37Z" id="g58-114"></path></g></svg> [cm]</td><td class="align_center">2.52</td><td class="align_center">2.71</td></tr><tr><td class="align_left"><svg height="11.6836pt" id="M44" style="vertical-align:-3.29562pt" version="1.1" viewbox="-0.0498162 -8.38798 14.1528 11.6836" width="14.1528pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"><g transform="matrix(.013,0,0,-0.013,0,0)"><path d="M43 650V622C120 616 128 612 128 526V124C128 39 120 33 34 27V0H270C392 0 492 25 567 83C643 141 690 230 690 350C690 444 655 517 605 565C543 625 450 650 323 650H43ZM213 547C213 587 217 598 226 604C236 612 262 617 304 617C371 617 429 604 474 576C554 529 592 439 592 336C592 176 505 36 319 36C246 36 213 55 213 131V547Z" id="g121-66"></path></g><g transform="matrix(.0091,0,0,-0.0091,9.555,3.132)"><path d="M384 109C349 76 310 59 268 59C197 59 123 113 120 245C240 248 367 259 384 262C403 266 407 275 407 296C407 376 338 451 254 451H253C201 451 148 425 105 378C65 334 39 272 39 203C39 88 112 -12 235 -12C266 -12 339 5 402 84L384 109ZM230 411C285 411 319 365 319 313C319 298 313 293 294 293C236 291 180 290 125 290C141 370 185 411 230 411Z" id="g58-99"></path></g></svg> [cm<sup>2</sup>/s]</td><td class="align_center">0.430</td><td class="align_center">0.440</td></tr><tr class="table-tr"><td colspan="3"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Effective diffusion coefficients of mixed gas in the cell system at 383 K.</div>

Advances in Mathematical Physics

tab2

Table 2

Table 2: A New Approach to Determine Gas Diffusion Coefficients in Porous Solids by EIS: Application for NH<sub>3</sub> and CO<sub>2</sub> Adsorption on Zirconia and Zeolite Type 5A 

Table 2 | A New Approach to Determine Gas Diffusion Coefficients in Porous Solids by EIS: Application for NH3 and CO2 Adsorption on Zirconia and Zeolite Type 5A 