More documents

Recommendations

Info

ðàñïðåäåëåíèÿ ÷àñòèö ïî ðàçìåðó â 2-3 íì, ïðåäïî÷òèòåëüíî îêîëî 2 íì. Â ýòîì ñëó÷àå ìîæåò áûòü äîñòèãíóòà ìåíüøàÿ òîëùèíà êàòîäíîãî êîìïëåêñà, è, ñëåäîâàòåëüíî, áîëåå âûñîêàÿ ñêîðîñòü òðàíñïîðòà êèñëîðîäà è óäàëåíèÿ H 2 O, ïðè ñíèæåíèÿ îáùåãî ñîäåðæàíèÿ Pt â ýëåêòðîêàòàëèçàòîðå. 2. Èñïîëüçîâàíèå ñïëàâà Pt ñ 3d-ïåðåõîäíûìè ìåòàëëàìè. Ýòèì ìîæíî äîñòè÷ü ïîâûøåíèÿ àêòèâíîñòè êàæäîé ÷àñòèöû, èíãèáèðîâàòü ñïåêàíèå Pt è ñíèçèòü ñîäåðæàíèå Pt â êàæäîé ÷àñòèöå è, ñëåäîâàòåëüíî, âî âñåì êàòîäå. 3. Àêòèâàöèÿ ïîâåðõíîñòè íîñèòåëÿ íàíåñåíèåì ïîðôèðèíîâûõ êîìïëåêñîâ. Â äîêëàäå áóäóò ïðåäñòàâëåíû ñëåäóþùèå îñíîâíûå ðåçóëüòàòû, ïîëó÷åííûå â ÈÊ è íàøèìè êîëëåãàìè èç äðóãèõ èíñòèòóòîâ: 1. Ðàçðàáîòêà îïòèìàëüíîé ïðîöåäóðû ïîëó÷åíèÿ äâóõ òèïîâ ÓÍÂ íà ñïëàâíûõ êàòàëèçàòîðàõ: íà 65Ni25Cu ñ ñëîÿìè ïåðïåíäèêóëÿðíûìè ê îñè íèòè (α= 90 0 ) è íà 62Fe8Ni òèïà íàíîòðóáîê ñ ñëîÿìè, ïàðàëëåëüíûìè îñè íèòè (α=0 0 ) è ÀÓ, ïðèãîòîâëåííîãî ïèðîëèçîì íåôòÿíîãî êîêñà. 2. Èçó÷åíèå ÓÍÂ ìåòîäàìè ÏÝÌ, ÑÝÌ è ÐÔÀ è õèìè÷åñêîãî àíàëèçà. 3. Íàíåñåíèå ïëàòèíû íà ÓÍÂ è ÀÓ. 4. Èçó÷åíèå êàòàëèçàòîðîâ ìåòîäàìè ÏÝÌ, ÑÝÌ è ÐÔÀ è õèìè÷åñêîãî àíàëèçà 5. Èçìåðåíèå àäñîðáöèè ÑÎ íà íàíåñåííûõ Pt êàòàëèçàòîðàõ. 6. Èññëåäîâàíèå êàòàëèçàòîðîâ ìåòîäîì EXAFS. 7. Ýëåêòðîõèìè÷åñêèå èçìåðåíèÿ. 35
ÐÀÑÏÐÅÄÅËÅÍÈÅ ÌÅÄÈ Â ÄÅÔÅÊÒÍÎÉ ÑÒÐÓÊÒÓÐÅ ÎÊÑÈÄÀ ÖÈÍÊÀ Â Cu/ZnO ÊÀÒÀËÈÇÀÒÎÐÀÕ ÑÈÍÒÅÇÀ ÌÅÒÀÍÎËÀ ÏÎ ÄÀÍÍÛÌ ÝËÅÊÒÐÎÍÍÎÉ ÌÈÊÐÎÑÊÎÏÈÈ ÂÛÑÎÊÎÃÎ ÐÀÇÐÅØÅÍÈß Èùåíêî À.Â., Çàéêîâñêèé Â.È. Èíñòèòóò êàòàëèçà èì. Ã.Ê. Áîðåñêîâà ÑÎ ÐÀÍ, Íîâîñèáèðñê E-mail: viz@catalysis.nsk.su Èçâåñòíî, ÷òî ìåäíî-öèíêîâûå êàòàëèçàòîðû Cu/ZnO îáëàäàþò âûñîêèìè àêòèâíîñòüþ è ñåëåêòèâíîñòüþ â íèçêîòåìïåðàòóðíîì ñèíòåçå ìåòàíîëà [1]. Íåñìîòðÿ íà áîëüøîå ÷èñëî ðàáîò ïî èññëåäîâàíèþ ýòèõ êàòàëèçàòîðîâ, ïðèðîäà èõ àêòèâíûõ öåíòðîâ è, â ÷àñòíîñòè, ñîñòîÿíèå ìåäè â íèõ äî ñèõ ïîð ÿâëÿþòñÿ ïðåäìåòîì øèðîêîé äèñêóññèè [2]. Íàñòîÿùàÿ ðàáîòà ïîñâÿùåíà èçó÷åíèþ ñòðóêòóðíûõ èçìåíåíèé êàòàëèçàòîðîâ Cu/ZnO, âîçíèêàþùèõ ïîñëå ïðîâåäåíèÿ ðåàêöèè ëèáî îêèñëèòåëüíîâîññòàíîâèòåëüíûõ îáðàáîòîê. Â êà÷åñòâå îáúåêòîâ èññëåäîâàíèÿ áûëè èñïîëüçîâàíû îáðàçöû àíîìàëüíûõ òâåðäûõ ðàñòâîðîâ èîíîâ ìåäè â àíèîííî-ìîäèôèöèðîâàííîì îêñèäå öèíêà – à.ì.-Cu 0.08 Zn 0.92 O. Îêñèäû ýòîãî ñîñòàâà îáðàçóþòñÿ â ïðîöåññå òåðìè÷åñêîãî ðàçëîæåíèÿ ãèäðîêñîêàðáîíàòà ìåäè è öèíêà (Zn,Cu) 5 (OH) 6 (CO 3 ) 2 ïðè òåìïåðàòóðàõ íå áîëåå 500-550 î Ñ è ñîäåðæàò îñòàòî÷íûå àíèîííûå ãðóïïû CO 2- 3 è OH - . Â êà÷åñòâå îáðàçöà ñðàâíåíèÿ áûë èññëåäîâàí îáðàçåö a.ì.-ZnO, ïîëó÷åííûé ðàçëîæåíèåì ãèäðîêñîêàðáîíàòà öèíêà. Äëÿ èññëåäîâàíèÿ ìèêðîñòðóêòóðû îáðàçöîâ èñïîëüçîâàëè ýëåêòðîííûé ìèêðîñêîï JEM-2010 ñ óñêîðÿþùèì íàïðÿæåíèåì 200 êÂ è ðàçðåøåíèåì ïî ëèíèÿì 0.14 íì. Äëÿ èíòåðïðåòàöèè ñíèìêîâ âûñîêîãî ðàçðåøåíèÿ èñïîëüçîâàëè ìíîãîñëîåâîé ìåòîä ðàñ÷åòà èçîáðàæåíèé ïðîñâå÷èâàþùåé ýëåêòðîííîé ìèêðîñêîïèè âûñîêîãî ðàçðåøåíèÿ (ÏÝÌÂÐ) [3]. Ïî äàííûì ÏÝÌÂÐ â ñòðóêòóðå êðèñòàëëîâ îêèñëåííûõ íà âîçäóõå ïðè 350 î Ñ îáðàçöîâ a.ì.-ZnO è à.ì.-Cu 0.08 Zn 0.92 O èìååòñÿ áîëüøîå ÷èñëî ïðîòÿæåííûõ äåôåêòîâ óïàêîâêè áàçàëüíûõ ïëîñêîñòåé (002), à òàêæå äèñëîêàöèîííûå ïðèçìàòè÷åñêèå ñìåùåíèÿ àòîìîâ. Ìîæíî ïðåäïîëîæèòü, 36
Page 1 and 2: Èíñòèòóò êàòàëèçà
Page 3 and 4: Îðãàíèçàòîðû êîíôå
Page 6 and 7: SINGLE SITE CATALYSTS - IDEAL MODEL
Page 8 and 9: ÑÒÀÁÈËÈÇÈÐÎÂÀÍÍÛÅ
Page 10 and 11: ÈÇÓ×ÅÍÈÅ ÌÅÕÀÍÈÇÌÎ
Page 12 and 13: Ñðàâíåíèå äèíàìèêè
Page 14 and 15: ÐÎËÜ ÍÎÑÈÒÅËÅÉ Â ÔÎ
Page 16 and 17: ÒÐÈÈÇÎÁÓÒÈËÀËÞÌÈÍ
Page 18: ÏÐÎÃÐÅÑÑ Â ÎÁËÀÑÒÈ
Page 22 and 23: MOLECULAR DESIGN OF NEW TYPE OF CAT
Page 24 and 25: PALLADIUM AND COBALT CATALYZED OXID
Page 26 and 27: ÍÎÂÛÉ ÏÎÄÕÎÄ Ê ÔÎÐÌ
Page 28 and 29: Èîííûé îáìåí Al 2O 3 2+
Page 30 and 31: êîòîðûõ èììîáèëèçî
Page 32 and 33: ïðèâåäøàÿ ê ñîçäàí
Page 34 and 35: ÐÀÇÐÀÁÎÒÊÀ ÊÀÒÀËÈÇ
Page 38 and 39: ÷òî äåôåêòû ýòîãî â
Page 40 and 41: ÈÇÓ×ÅÍÈÅ ÔÎÐÌÈÐÎÂÀ
Page 42 and 43: Ñîäåðæàíèå äèîêñèä
Page 44 and 45: Òàáë. 1. Äàííûå õåìî
Page 46 and 47: ñëàáîñâÿçàííîì ñîñ
Page 48 and 49: ãèäðîãåíèçàöèè, âå
Page 50 and 51: ÑÅËÅÊÒÈÂÍÀß ÎÊÈÑËÈ
Page 52 and 53: ÌÎÄÈÔÈÖÈÐÎÂÀÍÈÅ ÀË
Page 54 and 55: ãèäðîîêèñüþ àëþìèí
Page 56 and 57: ïðîìûñëîâûõ ìèíè-Í
Page 58 and 59: ÏÎËÓ×ÅÍÈÅ ÆÈÄÊÈÕ Ó
Page 60 and 61: ÈÇÎÌÅÐÈÇÀÖÈß ÓÃËÅÂ
Page 62 and 63: ÊÀÒÀËÈÒÈ×ÅÑÊÈÅ ÏÐÅ
Page 64 and 65: îáðàçîâàíèÿ öèêëîï
Page 66 and 67: ïðåèìóùåñòâåííîå ï
Page 68 and 69: ÈÍÒÅÐÊÀËÈÐÎÂÀÍÍÛÅ
Page 70 and 71: ÊÐÅÊÈÍÃ Ñ 10 -Ñ 15 - ÀË
Page 72 and 73: Â ÈÊ- ñïåêòðàõ àäñî
Page 74 and 75: Ïî âëèÿíèþ íà êàòàë
Page 76 and 77: Ïðåîáëàäàþùèìè ïðè
Page 78 and 79: ÃÈÄÐÎÏÅÐÅÐÀÁÎÒÊÀ Í
Page 80 and 81: Ïîñëå ãèäðîïåðåðàá
Page 82 and 83: óñëîâèé ïðîöåññà î
Page 84 and 85: åå ðåàêöèè. Èìåííî
Page 86 and 87:
í-C 4 H 8 + Pd II + Í 2 Î ⎯⎯
Page 88 and 89:
ïðîäóêòîâ. Íàïðèìå
Page 90 and 91:
×ÈÑËÎ È ÐÅÀÊÖÈÎÍÍÀ
Page 92 and 93:
Äëÿ âñåõ ñèñòåì îïð
Page 94 and 95:
ñèíäèîòàêòè÷åñêèé
Page 96 and 97:
ñâÿçåé è ýêâèâàëåí
Page 98 and 99:
ÝËÅÊÒÐÎÕÈÌÈ×ÅÑÊÈÉ
Page 100 and 101:
ÑÒÅÍÄÎÂÛÅ ÄÎÊËÀÄÛ
Page 102 and 103:
ÈÇÓ×ÅÍÈÅ ÌÅÕÀÍÈÇÌÀ
Page 104 and 105:
Ðèñóíîê 2. Äèôôåðåí
Page 106 and 107:
âòîðîé ïî èíòåíñèâ
Page 108 and 109:
êîëåáàíèÿ â ìîñòèê
Page 110 and 111:
ÑÒÐÓÊÒÓÐÍÎ-ÎÐÃÀÍÈÇ
Page 112 and 113:
Òàáëèöà 2. Ðàñïðåäå
Page 114 and 115:
50 Rate/10 -8 mol g -1 s -1 40 30 2
Page 116 and 117:
ÐÀÇÐÀÁÎÒÊÀ È ÈÑÑËÅ
Page 118 and 119:
êèñëîðîäó øïèíåëè C
Page 120 and 121:
èçîìåðèçàöèè í-ãåê
Page 122 and 123:
ÃÅÍÅÇÈÑ ÔÀÇÎÂÎÃÎ Ñ
Page 124 and 125:
óïëîòíåíèÿ çàïîëíÿ
Page 126 and 127:
Ïðèðîäà èñõîäíûõ ñ
Page 128 and 129:
ÏÎËÈÌÅÐÍÛÅ ÐÎÄÈÉÑÎ
Page 130 and 131:
ïðîìîòîðîâ. Â ðàáîò
Page 132 and 133:
ôîðìàëüäåãèä, äè- è
Page 134 and 135:
Äàëüíåéøàÿ äåãèäðî
Page 136 and 137:
ÌÅÒÎÄÛ ÐÅÃÓËÈÐÎÂÀÍ
Page 138 and 139:
ÑÈÍÒÅÇ È ÈÑÑËÅÄÎÂÀ
Page 140 and 141:
ÂËÈßÍÈÅ ÎÁÐÀÁÎÒÎÊ
Page 142 and 143:
Íàðÿäó ñ óâåëè÷åíè
Page 144 and 145:
îáîðîòîâ êàòàëèçàò
Page 146 and 147:
Íàìè ðàçðàáîòàí ïð
Page 148 and 149:
äî 0,5 ÌÏà. Ôîðìû çàâ
Page 150 and 151:
Î ÏÐÎÖÅÑÑÀÕ ÏÐÅÄÎÒ
Page 152 and 153:
ÐÀÇÐÀÁÎÒÊÀ ÊÀÒÀËÈÒ
Page 154 and 155:
ÏÐÅÂÐÀÙÅÍÈß ÑÒÈÐÎË
Page 156 and 157:
ÆÈÄÊÎÔÀÇÍÀß ÈÇÎÌÅÐ
Page 158 and 159:
ÍÅÏÎËÍÎÅ ÎÊÈÑËÅÍÈÅ
Page 160 and 161:
ÍÀÍÎÑÒÐÓÊÒÓÐÍÛÅ ÊÀ
Page 162 and 163:
ÃÈÄÐÎÊÎÍÂÅÐÑÈß Í-Ã
Page 164 and 165:
ðàñòåò ñ ïîâûøåíèå
Page 166 and 167:
Èíäèâèäóàëüíàÿ àäñ
Page 168 and 169:
â ÑÍÃ ñíèæàåò òåìïå
Page 170 and 171:
Ïðîöåññ áèôîðìèíãà
Page 172 and 173:
ÈÑÏÎËÜÇÎÂÀÍÈÅ ÊÀÒÀ
Page 174 and 175:
Ïîâûøåíèå äàâëåíèÿ
Page 176 and 177:
Èç ïðèðîäíîãî öåîë
Page 178 and 179:
ÄÅÃÈÄÐÈÐÎÂÀÍÈÅ ËÅÃ
Page 180 and 181:
ðîäèåâûå è ðóòåíèå
Page 182 and 183:
Òàáëèöà 1. Âëèÿíèå ï
Page 184 and 185:
ÈÑÑËÅÄÎÂÀÍÈÅ ÏÐÎÖÅ
Page 186 and 187:
ÏÅÐÅÐÀÁÎÒÊÀ ÄÈÑÒÈË
Page 188 and 189:
ÃÈÄÐÎÏÅÐÅÐÀÁÎÒÊÀ í
Page 190 and 191:
ÊÐÅÊÈÍÃ ÒßÆÅËÎÃÎ Í
Page 192 and 193:
óãëåðîäà â äèîêñèä
Page 194 and 195:
ïîäà÷è ñûðüÿ 1,0-1,5 ÷
Page 196 and 197:
ëîêàëèçîâàííûå íà
Page 198 and 199:
CÓËÜÔÎÊÀÒÈÎÍÈÒÛ ÍÀ
Page 200 and 201:
Ïðè íàëè÷èè â ñèñòå
Page 202 and 203:
ãåêñàäåêàíîë-2 (ïðè
Page 204 and 205:
óñëîâèÿ îêèñëåíèÿ
Page 206 and 207:
ãàçîâ òåðìîäåñîðáö
Page 208 and 209:
ïîëèìåðèçàöèè ýòèë
Page 210 and 211:
ÊÀÒÀËÈÇÈÐÓÅÌÎÅ ÏÀË
Page 212 and 213:
ÈÑÑËÅÄÎÂÀÍÈÅ ÂËÈßÍ
Page 214 and 215:
ÄÈÌÅÐÈÇÀÖÈß ÝÒÈËÅÍ
Page 216 and 217:
ÈÇÓ×ÅÍÈÅ ÏÐÎÖÅÑÑÎÂ
Page 218 and 219:
ÐÀÑÏÐÅÄÅËÅÍÈÅ ÂÍÓÒ
Page 220 and 221:
ÃÎÌÎ - È ÑÎÏÎËÈÌÅÐÈ
Page 222 and 223:
ÏÎËÈÌÅÐÈÇÀÖÈß ÝÒÈË
Page 224 and 225:
Ñ ïðèìåíåíèåì ìåòî
Page 226 and 227:
àìîðôíûìè è êðèñòà
Page 228 and 229:
ÑÏÈÑÎÊ ÀÄÐÅÑÎÂ Ó×À
Page 230 and 231:
ÃÐÈÃÎÐÜÅÂÀ Íåëëè Ã
Page 232 and 233:
ÊÀÐÛÌÎÂÀ Ðàøèäà Õà
Page 234 and 235:
ÌÓÍØÈÅÂÀ Ìèíà Êåðè
Page 236 and 237:
ÓÑÌÀÍÎÂÀ Ìàíçóðà Ì
Page 238 and 239:
ÑÎÄÅÐÆÀÍÈÅ ÊËÞ×ÅÂÛ
Page 240 and 241:
Ñåêöèÿ II Êàòàëèç â
Page 242 and 243:
CÄ-I-3 CÄ-I-4 CÄ-I-5 CÄ-I-6 CÄ
Page 244 and 245:
CÄ-II-10 Çàêèðîâà À.Ã.,
Page 246 and 247:
CÄ-III-4 Ìèêåíàñ T.Á., Å
show all

ÐÐ¾Ð»ÐµÐºÑÐ»ÑÑÐ½ÑÐ¹ Ð´Ð¸Ð·Ð°Ð¹Ð½ ÐºÐ°ÑÐ°Ð»Ð¸Ð·Ð°ÑÐ¾ÑÐ¾Ð² Ð¸ ÐºÐ°ÑÐ°Ð»Ð¸Ð· Ð² Ð¿ÑÐ¾ÑÐµÑÑÐ°Ñ ...

Create successful ePaper yourself

Delete template?

Save as template?

ÐÐ¾Ð»ÐµÐºÑÐ»ÑÑÐ½ÑÐ¹ Ð´Ð¸Ð·Ð°Ð¹Ð½ ÐºÐ°ÑÐ°Ð»Ð¸Ð·Ð°ÑÐ¾ÑÐ¾Ð² Ð¸ ÐºÐ°ÑÐ°Ð»Ð¸Ð· Ð² Ð¿ÑÐ¾ÑÐµÑÑÐ°Ñ...