Evaluation on ab/desorption of Water Vapor for Mesoporous Silica Synthesized using the Mineral Tailing

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http://dx.doi.org/10.12972/ksmer.2012.49.6.799

ֈࢠߦऀഉ෍নܤࡔ୺එ߇ਆਓࠤಉଭใÂࢺ਌൉নඌԧ

ୢੰ෮

Â ࢮ୪෮

Â ࢮ୍֜

Evaluation on ab/desorption of Water Vapor for Mesoporous Silica Synthesized using the Mineral Tailing

Ahhyeon Jeon, Jayhyun Park and Jaikoo Park

Abstract :The ab/desorption characteristics of the mesoporous silica, which was synthesized using the mineral tailing was investigated to develop the material for self-controlling humidity. In synthesis, tetraethyl orthosilicate (TEOS) was used for comparing the mineral tailing of silica source. Specific surface area, pore volume and median pore diameter of M-MCM-41 were measured as 507 m²/g, 0.45 cm³/g and 3.3 nm, whereas those of M-SBA-15 were 330 m²/g, 0.54 cm³/g and 6.0 nm, respectively. The results of ab/desorption tests showed that the absorption amounts of water vapor in MCM-41, M-MCM-41, SBA-15 and M-SBA-15 were measured as 143.7 g/m², 159.4 g/m², 190.7 g/m² and 242.7 g/m², whereas the desorption amounts from MCM-41, M-MCM-41, SBA-15 and M-SBA-15 were 27.6 g/m², 46.5 g/m², 117.3 g/m²and 131.6 g/m², respectively. The most amount of ab/desorption of water vapor was found with M-SBA-15, which was synthesized with mineral tailing, and the pore structure of M-SBA-15 was not significantly changed even after the ab/desorption of water vapor.

Key words : Mesoporous silica, Mineral tailings, MCM-41, SBA-15, Ab/desorption of water vapor څ أ ۙڱܓ֥ۦεÒьॠČۙġйεটڌॠيϭܓप֟֬͠νࠢε܃ܓॠيড় · ѓ֥࣢ՁںथÀॠٕ

ɰ. ०ՁقەرԴ֬νࠢڙġйۆҼİНݗͿəTEOSεۋڌॠٕɰ. ġйͿҙࢢ०Ձʽϭܓप֟֬͠νࠢ

M-MCM-41ęM-SBA-15ۆҼशϸۺ, ߪşėҙक़ŔνČथŒşėࡾşəÁÁ507 m²/g, 0.45 cm³/g, 3.3 nm ŔνČ330 m²/g, 0.54 cm³/g, 6.0 nmͿࠑ܁ʼؽɰ. ড়·ѓ֥थÀĀę, MCM-41ęM-MCM-41ۆড়·ѓ֥͟

ڹÁÁ143.7 g/m², 27.6 g/m²ٮ159.4 g/m², 46.5 g/m²ۋČ, SBA-15, M-SBA-15ۆড়·ѓ֥͟ڹÁÁ190.7 g/m², 117.3 g/m²ٮ242.7 g/m², 131.6 g/m²Ϳ, ०ՁʽНݗܼġйͿҙࢢ܃ܓॢϭܓप֟֬͠νࠢM-SBA-15À

Àۤড়·ѓ֥࣢Ձۋȭڼںঝۍॠٕɰ. ̚ॢM-SBA-15Àսݒşۆড়·ѓ֥ۋ঳قʪşėĵܓÀäۆѺॠݓ

؍əìڷͿқԵʼؽɰ.

ܳڅر ϭܓप֟֬͠νࠢ, ġй, MCM-41, SBA-15, ড়ѓ֥࣢Ձ

2012ț10ښ19ێۿս, 2012ț12ښ10ێ֮ԐٰΒ 2012ț12ښ13ێóۦঝ܁

1) ॢتʂॡİۙڙঞąėॡę

2) ॢĶġ३ěνėɳ

*Corresponding Author(чۦĵ) E-mail; [email protected]

Address; Department of Natural Resources and Environ- mental Engineering, Hanyang University, Seoul, Korea

eISSN 2287-4321(Online)

Դ΁

߯ŖԞݚݒ঳ķˣ֬Ǵঞąقʂॢě֮ۋȭ؉ݙ ق˰͆֬Ǵ֥ʪۆܼڅՁʪȭ؉ݓČەɰ. ֬ǴقԴ

࡟ۺ॥ں ɗǛə Ԝʂ֥ʪə 4070%ۋݓχ(Yang et al., 2000), ֬ǴقԴۆӊ͒æܓٮÀۻ܃ुԐڌڷͿ

ۍॢ֥ʪԜ֧ęَş, ŔνČûڐقəॢ͚æܓॠČ, يζقəČ٣ɰ֥ॢڍνǣ͆ş঳Ϳۍ३ûڐقə߯

۹֥ʪÀ1020% RH, ۤυşÂقə80% RHۋԜڷ Ϳ֬Ǵ֥ʪۆѺজۆफڹأ6070% RH܁ʪࢀì ڷͿ҃ČʼČەɰ. ֥ʪÀǰڷϸ܁ۻşٮɂ, ࡑˣ ۆæܓÇ, ؉ࢹक़Ձक़ҙّęÏڹ؎ͪβşՁݗঞں

ێڷࢅČ, ֥ʪÀȭڷϸĔँۋˣՃŒ˞ۆѥ֩ۋڌ ۋ३֬Ǵঞąق؊ٖॳںйࠚɰ(Yang et al., 2000).

࡟ۺॢ֬Ǵঞąںڦ३À֥ş, ঞॄş, ܃֥şˣş şεۋڌॢɰتॢѓѪۋەڷǣ, ۋəՙڼںьԦ֨

ࢅ϶, ߸Àۺۍقȃݓεज़څͿॠəɳ۾ۋەɰ. ˰͆

Դ߸ÀۺۍقȃݓÀՙڅʼݓ؍Č, ֬Ǵ֥ʪڮݓÀ

Àɠॢٍĵۆज़څՁۋȭ؉ܐČ, ێ҆ęڮͥںܼ֮

ڷͿۋقʂॢٍĵÀটь০ݕॱʼČەɰ. ێ҆قԴ

ٍĵȦЛ

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Table 1. Chemical components of mineral tailings

Component Contents (%)

SiO2 85.2

Al2O3 7.81

CaO 0.25

K2O 2.53

Fe2O3 1.12

TiO2 0.21

MgO 0.28

P2O5 0.07

MnO 0.02

Na2O 0.15

Loss on ignition 1.95

Total 99.6

əߎٍőܓࢹ, জԓۦεۋڌॠي֬Ǵ֥ʪεܓۼॠə

ՙۦۍܓ֥҃˚εÒьॠəٍĵÀۋΘرܐČ(Ministry of Environment, 2002), ڮͥقԴəcellular based materials, wood, wood based materials ˣںۋڌॢ֬Ǵėşݗق

ʂॢٍĵÀۋΘرݓČەɰ(Cerolini et al., 2009, Osanyintola et al., 2006). ॢठ, ĶǴقԴəսۤČ, чНěˣڮН

҃঒εڦॢ֥ʪܓۼقԴҙࢢ֨ۚʽܓ֥ۦۆսڅÀ

֬ǴঞąڷͿঝʂʼؽڷǣ(Kim et al., 2003), ۋقě

ॢ ٍĵə йҼॢ ֬܁ۋɰ.

ٍ҆ĵقԴəۙڱۺڷͿ֥ʪۆܓۼۋÀɠॢՙ ۦͿԴɰėՁНݗۍϭܓप֟֬͠νࠢεۺڌॠČۙ

ॠٕɰ. ϭܓप֟֬͠νࠢəড়޳ۦфߤϔݓݓߕ, Յ ԴˣڷͿȇνڿڌʼČەə Нݗۋɰ(Kresge et al., 1992, Tarafdar and Pramanik, 2006, Park et al., 2007, Wang et al., 2009). ϭܓप֟֬͠νࠢəܳͿۻĵߕ֨

أۍtetraethyl orthosilicate(TEOS), tetramethyl orthosilicate (TMOS) ˣڷͿ०Ձʽɰ. ۻĵߕ֨أڷͿϭܓप֟͠

֬νࠢε०ՁॠϸȭڹտʪٮӇδъڿ֨Â, ؋܁ۺ ۍϭܓşėۆНݗںصںսەڷǣ, ۻĵߕ֨أڹ

ʫՁںÀݓČەČ, ČÀۍɳ۾ۋەɰ. ۋ͠ॢɳ۾ں

ٰ҃ॠşڦ३Ե࢏Ҽԓۦ, ՙÁۦ֢͒Ŕ, ġйˣۆ

տঞۙڙڷͿҙࢢۻĵߕ֨أںʂߕॣ֬νࠢڙںص əٍĵÀݕॱʼرٵɰ(Misran et al., 2007, Yu et al., 2009, Chandrasekar et al., 2008, Halina et al., 2007, Han et al., 2010, Han et al., 2011). ٍ҆ĵقԴəۻĵ ߕ֨أʂߕۦͿġй(mineral tailings)εটڌॠيϭܓ प֟֬͠νࠢε०Ձॠٕɰ. ġйəԸġę܁ܼڮڌ

ॢġНںধսॠČ, ǫڹИڌġНںݓࠡॠəìڷͿ (Yoo et al., 2011), ܳͿदÚʪۆ߿ۻۦͿԐڌʼČە ڷǣϔςۤęۦটڌۆҙܔڷͿʂҙқʆقѓ࠘ʼČ

ەɰ. ѓ࠘ʽġйÀҼ·ц͊ˣۆॄজۚڌقۆ३2޲

ۺ١ّڙۆÀɠՁۋەرġйۆۺۼॢߌνÀज़څ ॠɰ(Choi et al., 2012). ˰͆Դġйεটڌ॥ڷͿ׆द

ۙڙۆۦটڌ, ०ՁҼڌۼأŔνČČҙÀÀ࠘Нݗ

܃ܓ͆əۋ۾ںÀݕɰ. ٍ҆ĵقԴəտսۻĵߕ֨

أęġйεۋڌॠي०Ձʽ˃ܛΪۆϭܓप֟֬͠

νࠢۆ НՁں ԴͿ ҼİॠČ, Ԝ٣قԴ २٣२֥şε

ۋڌॠي ०Ձʽ ϭܓप֟͠ ֬νࠢۆ ড়·ѓ֥ ࣢Ձę

ড়·ѓ֥ ֬ॹ ঳ՙۦۆ ǴĵՁں ঝۍॠٕɰ.

֬ॹ

ϭܓप֟֬͠νࠢ०Ձ

ϭܓप֟֬͠νࠢ०Ձںڦॢ߻ьڙΒͿۻ͆ǫʪ

३ǫķۆÀॱġԓۍտ֪ġԓقԴ޽ࠄॢġйεটڌ

ॠٕڷ϶, ֬νࠢۻĵߕۍtetraethyl orthosilicate(TEOS, 98.0%, Samchun Chemical, Korea)εġйۆҼİНݗͿ

ۋڌॠٕɰ. ԐڌʽġйۆজॡۺܓՁڹXRF(PW2404, Philips, Netherlands) қԵںࣀ३ঝۍॠٕČ, ŔĀę εTable 1قǣࢍǴؽɰ. қԵĀę, ġйəɰتॢজ ०НͿĵՁʼرەݓχ, ʂҙқ֬νࠢٮ؎ΘйǣͿ

ۋΘر܋ەڼںঝۍॣսەؽɰ. SiO2ۆ॥͟ڹ85.2%

Ϳ Àۤ ȭؕČ, Al2O3ۆ॥͟ڹ 7.81%ε޲ݓॠٕɰ.

Ըॱٍĵق˰βϸ֬νࡀۋ࣡ڌؚںصşڦॢʂߕۦ ͿԐڌʽदۙڙۍԵ࢏ধ(ash)ٮߏġԵġй(iron ore tailings)ۆSiO2ٮAl2O3ۆ॥͟ڹÁÁ3782%ٮ0.8

24%Ϳٍ҆ĵقԐڌʽġйٮҼİ॰ں˺Ҽ֦ॠ äǣ ǰڹ ìڷͿ ঝۍʼؽɰ(Misran et al., 2007, Chandrasekar et al., 2008, Yu et al., 2009). ˰͆Դϭܓ प֟֬͠νࠢ०Ձںڦॢۻĵߕ֨أںʂߕॣ֬ν

ࠢڙڷͿġйεԐڌॠəìۋۺ०ॣìڷͿқԵʼ ؽɰ.

दۙڙق؎ࠥνڌڵѪںԐڌॠي֬νࡀۋ࣡ڌؚ

ںصəşܕٍĵÀەڼںঝۍॠٕČ(Misran et al., 2007), ۋεٍ҆ĵقʪۺڌॠيġйͿҙࢢ֬νࡀۋ

࣡ڌؚںصؽɰ. ֬νࡀۋ࣡ڌؚقتۋ٣ćϸটՁ

܃ۍhexadecyl trimethyl ammonium bromide(CTAB)ٮ

Ҽۋ٣ćϸটՁ܃ۍPEO-PPO-PEO triblock copolymer (P123)εԐڌॠيşė࣢ՁۋɰδM-MCM-41ęM- SBA-15ε ÁÁ ०Ձॠٕɰ.

M-MCM-41ۆąڍ, ݒΪս60 mlٮhexadecyl trimethyl ammonium bromide 5.5 g, ammonia water 65 mlεȏ Č߿қ০İъ֨ࢇɰ. ۋ঳ġйͿҙࢢصڹ֬νࡀۋ

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Table 2. Synthesized materials used in this study

Silica source Surfactant Synthesized materials

Mineral tailings CTAB M-MCM-41

P123 M-SBA-15

Tetraethyl orthosilicate (TEOS) CTAB MCM-41

P123 SBA-15

࣡ڌؚ100 mlεߐÀॢ঳35قԴ1 ֨Âʴ؋İъ ॠٕɰ. ŔνČacetic acidںۋڌॠيpHε7Ϳܓۼॢ

঳ يęε ࣀ३ صڹ Нݗں ݒΪսͿ սՃॠٕɰ. 10 0ۆæܓşق12 ֨Âæܓ঳550قԴَߌνॠي

M-MCM-41ں ०Ձॠٕɰ.

M-SBA-15ۆąڍ, 2 N HCl 120 gقҼۋ٣ćϸট Ձ܃P123 4 gںȏČ߿қ০İъ֨ࢇɰ. ۋঔ०ؚق

֬νࡀۋ࣡ڌؚ100 mlںߐÀॢ঳1 ֨Âİъॢɰ.

İъԜࢗقԴHCl 35 wt% 12 gęݒΪս50 mlεߐ ÀॠČ, 35قԴ24 ֨Âİъॢɰ. ŔνČ90قԴ

72 ֨Â܁࠘֨ࢇɰ. ۋ঳Çؓيęεࣀ३Č঍Нں

صČ, ۋεսՃॢɰ. æܓę܁ںäࠚ঳ćϸটՁ܃

܃äε ڦ३ ėş қڦşقԴ ֧٣ ՚ʪ 1/minڷͿ

550قԴ4 ֨Âʴ؋َߌνॠيM-SBA-15ں०Ձॠ

ٕɰ.

ॢठտս֬νࠢۻĵߕ֨أۍTEOSε߻ьНݗͿ

०ՁॢMCM-41ęSBA-15ۆ०ՁѓѪڹԸॱٍĵѓ ѪںࢹʂͿսॱॠٕɰ(Zhao et al., 1998, Matsumoto et al., 1999). ٍ҆ĵقԴԐڌʽ߻ьНݗęćϸটՁ

܃ܛΪф ०ՁНݗں Table 2ق ǣࢍǴؽɰ.

НՁथÀ

०Ձʽϭܓप֟֬͠νࠢۆҼशϸۺ, थŒşėࡾş, şėҙक़εݗՙড়·࢐޳ۤ࠘(ASAP 2020, Micromeritics, USA)εۋڌॠيࠑ܁ॠٕɰ. ̚ॢ०Ձʽϭܓप֟͠

֬νࠢۆড়·ѓ֥࣢Ձں؎؉҃şڦ३KSőüæ߹ۦ Βۆড়ѓ֥Ձ֨ॹѓѪق˰͆ۤҼф֨ॹߕ܃ۚں

սॱॠٕɰ(Korea Standards information center, 2012).

ݥڹşÂǴ֥ʪقٖॳں؎؉҃şڦ३२٣२֥ş (Temp. & Humid. Chamber, TH-I-180, Jeiotech, Korea) εۋڌॠٕɰ. қϊԜࢗقԴۆйՃॢܼ͟Ѻজεࠑ

܁ॠş ڦॢ ۹ڐ(Balance, AUW-220, SHIMADZU, Japan),Ԣ॔ܳѺۆ܁ঝॢ٣֥ʪεࠑ܁ॠşڦॢ٣

֥ʪʚۋࢢͿä(Thermo-hydrometer, SK-L200TH쩀, SATO, Japan), २٣२֥şǴێ܁ॢॄ՚ںڦॢѓॄ

ۤҼфॄ՚ć(Anemomaster, Model A543, KANOMAX, Japan)ε Ԑڌॠٕɰ.

֨ॹߕəKSőüۆ߯ՙࡾşۍ100 mm × 100 mm

× 100 mmͿ܃ۚॠČ, ֥࣊ॠيॢɳϸχںǫûড়·

ѓ֥֬ॹںսॱॠٕɰ. ֬ॹܓæڹ٣ʪ27, ॄ՚

0.1 m/sͿێ܁ॠóڮݓॢԜࢗقԴԜʂ֥ʪεѺজ

֨ࡎɰ. Ԝʂ֥ʪ 50% RHͿ 24 ֨Â २͟ ֨ࢇ ঳, 50% RHقԴ75% RHͿ24 ֨Âʴ؋ߎߎ০À֥֨ࢅ

Č, 75% RHقԴ50% RHͿ24 ֨Âʴ؋ߎߎ০Ç֥

ॠٕɰ. ড়·ѓ֥֬ॹ঳ՙۦНՁѺজε؎؉҃şڦ ३ݗՙড়·࢐޳ۤ࠘(ASAP 2020, Micromeritics, USA) ںۋڌॠيҼशϸۺ, थŒşėࡾş, şėҙक़εۦࠑ

܁ॠٕɰ.

ĀęфČ޶

०Ձʽϭܓप֟֬͠νࠢۆНՁ

Fig. 1ڹ०Ձʽϭܓप֟֬͠νࠢۆݗՙড়·࢐޳č Ըۋɰ. Fig. 1قԴ MCM-41ę M-MCM-41ڹ P/P0ۆ

0.3ҙŖقԴڿ߹ۋ֨ۚʼČ, SBA-15ٮM-SBA-15ۆ

ąڍəP/P0ۆ0.50.6 ҙŖقԴڿ߹ۋ֨ۚʼəìں

ঝۍॠٕɰ. ०ՁНݗق˰͆ьԦॠəڿ߹ĵÂۆ޲

ۋəşėࡾşق˰δìڷͿ, ԜʂۺڷͿࢀşėࡾş εÀݕНݗقԴڿ߹ۋьԦॠşڦ३Դəȭڹؓͳ ۋज़څॠş˺Лۋɰ. ०ՁНݗѻ߻ьНݗق˰δݗ ՙ߯ʂড়޳͟ۆąڍ, MCM-41ۋM-MCM-41҃ɰأ

43%܁ʪȭؕČ, SBA-15ڹM-SBA-15҃ɰأ24%܁

ʪȭ؉ġйεԐڌॠي०ՁॢНݗ҃ɰտսۻĵߕ

֨أۍTEOSͿ०ՁॢНݗۆড়޳͟ۋʌψؕɰ. ॠ ݓχġйεԐڌॠي०Ձॢϭܓप֟֬͠νࠢۆড়·

࢐޳͟ڹԸॱٍĵۆĀęٮҼİॠٕں˺ڮԐॠäǣ

ܓŚ ʌ ȭڹ ìڷͿ ঝۍʼؽɰ(Chandrasekar et al., 2008, Yu et al., 2009). ०Ձʽϭܓप֟֬͠νࠢۆݗ ՙˣ٣ড়·࢐޳čԸڹIUPACقԴ܁ۆॢÀ֟ˣ٣

ড়·࢐޳čԸۆқΪܼ঍ࢗεÀܐəʚ, ۋəێъ ۺۍϭܓप֟͠НݗقԴьþʼə঍ࢗۋɰ(Kruk and Jaroniec, 2001).

Fig. 2ə०Ձʽϭܓप֟֬͠νࠢۆşėқपεǣ

ࢍǶìۋɰ. şėࡾşқपə࢐޳čԸڷͿҙࢢBJH(Barrett,

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Fig. 1. N2 isotherm of mesoporous silica. Fig. 2. Pore diameter distribution of mesoporous silica.

Table 3. Properties of synthesized materials Surface area

(m²/g)

Pore volume (cm³/g)

Pore diameter (nm)

MCM-41 930 0.79 2.9

SBA-15 816 0.90 5.4

M-MCM-41 507 0.45 3.3

M-SBA-15 330 0.54 6.0

Joyner, Halenda) ֩ق ۆ३ ԓ߻ʼؽɰ(Barrett et al., 1951). Fig. 2قԴMCM-41ęM-MCM-41ۆथŒşė ڹ23 nmقܳͿқपॠČ, SBA-15ٮM-SBA-15ə

56 nmق қपॠČ ەر ʴێॢ ąॳں ǣࢍǴؽɰ.

şėҙक़ۆąڍ, ߻ьНݗق˰͆أ1.61.8ѕ܁ʪ

޲ۋÀ ǣə ìڷͿ ঝۍʼؽɰ.

߻ьНݗق˰δ०ՁНݗۆНՁںTable 3قǣࢍǴ ؽɰ. տսॢ֬νࠢ֨أۍTEOSε߻ьНݗͿ०Ձ

ॢMCM-41ęSBA-15ۆҼशϸۺ, ߪşėҙक़Ŕν ČथŒşėࡾşəÁÁ930 m²/g, 0.79 cm³/g, 2.9 nm ٮ816 m²/g, 0.90 cm³/g, 5.4 nmͿǣࢍǮɰ. ॢठ, ġ йε ߻ьНݗͿ ०Ձʽ M-MCM-41ę M-SBA-15ۆ

НՁڹÁÁ507 m²/g, 0.45 cm³/g, 3.3 nm ŔνČ330 m²/g, 0.54 cm³/g, 6.0 nmͿঝۍʼؽɰ. տսॢ֬νࠢ

֨أۍTEOSͿ०ՁॢНݗۋġйͿ०ՁॢНݗ҃ɰ

ȭڹݗՙড়޳͟ęҼशϸۺфߪşėҙक़εÀܐɰ.

ۋəTEOSÀقࢺ֨ş(ethoxy group)ۆĀ०ʽ঍ࢗͿ

ܕۦॠ϶ Œێॢ ъڿۋ Àɠॠş ˺ЛڷͿ ࣺɳʽɰ (Lee et al., 2002). ġйε߻ьНݗͿ०Ձʽϭܓप͠

֟֬νࠢəտսॢ֬νࠢ֨أۍTEOSͿ०ՁॢН ݗۆНՁقй࠘ݓЇॠݓχşܕۆदۙڙڷͿҙࢢ० ՁʽНݗۆНՁقěॢٍĵĀęٮڮԐॠдͿܓ֥

ۦͿۆڿڌ֬ॹۋÀɠॣìڷͿࣺɳʽɰ(Chandrasekar et al., 2008).

ড়֥࣢Ձ

२٣२֥şεۋڌॠي०ՁНݗۆড়·ѓ֥࣢Ձںथ ÀॢĀęεFig. 3قǣࢍǴؽɰ. ०Ձʽϭܓप֟͠Н ݗۆড়֥͟ڹ1314 ֨ÂūݓəࢀѺজεǣࢍǣݓ

؍Č, Ŕۋ঳۾޲ۺڷͿݒÀॠɰÀ2830 ֨Âقə

߯ʂড়֥͟ںǣࢍǴؽɰ. ݌, ۋĵÂقԴə֨Âق˰

͆ϭܓşėǴقড়޳ʼəսݒşۆتۋݒÀॠϸԴ

van der waals forceقۆॢսݒşۆڿ߹͟ۋ߯ʂ࠘

εǣࢍǶìڷͿԐΒʽɰ. ߯ʂড়֥ĵÂۋ঳ҙࢢə

ܳѺۆ֥ʪÀǰ؉ݓϸԴۦΒशϸقড়޳ʽսқۋ

࢐޳ʿęʴ֨قşėǴড়֥ʽսқۆѓ֥ۋێرǣ əìڷͿǣࢍǮɰ. Fig. 4əÁşɰδ4 ܛΪۆϭܓ प֟֬͠νࠢۆড়·ѓ֥͟ںǣࢍǶìۋɰ. ড়֥͟ڹ

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Fig. 3. Water ab/desorption behavior of mesoporous silica.

Fig. 4. Amounts of water ab/desorption on mesoporos silica.

Fig. 5. N2 isotherm of MCM-41.

֨Βۆ߯ʂড়֥͟ںǣࢍǶìۋ϶, ѓ֥͟ڹ߯ʂড় ս֨֨Βݗ͟ęÇ֥Ò֨঳24 ֨Âąę॰ں˺ۆ

֨Βݗ͟ęۆ޲ͿҙࢢĵॢÉۋɰ. ֬ॹۆĀę, ۻĵ ߕ֨أڷͿ०Ձʽϭܓप֟֬͠νࠢقҼॠيġйͿ

०Ձʽϭܓप֟֬͠νࠢۆąڍÀʌȭڹড়ѓ֥

͟ںǣࢍǴؽɰ. ۋəԸॱٍĵٮڮԐॢĀęͿԴ, ġ йͿҙࢢ०Ձʽϭܓप֟֬͠νࠢÀȭڹড়·ѓ֥࣢

ՁںǣࢍǶڙۍڹġйǴAlۆٖॳقۆॢìڷͿ

ࣺɳʽɰ(Rozwadowski et al., 2001).

०ՁНݗܼSBA-15ćَۆНݗۋMCM-41ćَН ݗ҃ɰʌȭڹড়ѓ֥͟ںǣࢍǴؽəʚۋəTable 3قԴঝۍॣսەˢۋSBA-15ÀMCM-41҃ɰʌࢀ

şėҙक़εÀݓČەر॥սɠͳ(water capacity)ۋʌ

ȭş˺ЛڷͿࣺɳʼČ, ۋəϭܓप֟͠Нݗۆսқ

ড়޳قěॢşܕٍĵۆĀęقԴʪʴێॢĀęεঝ ۍॣսەؽɰ(Oh et al., 2003). ˰͆ԴϭܓşėНݗ ۆড়·ѓ֥࣢ՁڹAlۆڮИقۆ३ࢀٖॳںыČ, ۋ

޲ۺڷͿ şėҙक़قۆ३Ā܁ʽɰČࣺɳʽɰ.

սݒşÀ०ՁНݗۆǴĵՁقй࠘əٖॳ ϭܓşėНݗڹێъۺڷͿսқęَقʂ३ࠄأ ॠɰČ؎Ͳ܋ەرড়·ѓ֥࣢ՁथÀقԴԐڌʽսݒ şقʂॢǴĵՁथÀÀज़څॠɰ. ˰͆Դড়·ѓ֥थÀ

ۻ঳ۆ०ՁНݗۆНՁѺজεݗՙড়·࢐޳ۤ࠘εࣀ ३қԵॠٕɰ. սݒşقʂॢ०ՁНݗۆǴĵՁڹϭ ܓşėНݗقʂॢ࣢ՁںঝۍॠşڦॢìۋдͿտ սۻĵߕ֨أۍTEOSͿ०Ձʽϭܓप֟֬͠νࠢε

ʂԜڷͿ սॱʼؽɰ.

ںFig. 5قǣࢍǴؽɰ. Fig. 5 ܼAəড়·ѓ֥͟थÀ

ڹড়·ѓ֥͟थÀ঳, ۋۻ҃ɰȭڹؓͳقԴڿ߹ĵÂ ۋьԦॠČ, ݗՙড়޳͟ۋÇՙॠٕɰ. ŔνČhysterisis čԸۆڮ঍̚ॢ֬οʌٮĵۆşėںÀݓČەəН ݗقԴܳͿьԦʼəH1قԴҝŒێॢMCM-41قԴ

৖০ǣࢍǣə঍ࢗۍH4ۆ঍ࢗͿѺজॠٕɰ. ݌, ս ݒşٮۆۿߤڷͿŒێॢ঍ࢗۆşėۋҝŒێॢ঍ࢗ

ۆ şėڷͿ Ѻজ॥ں ؎ ս ەɰ(Kruk and Jaroniec, MCM-41ۆşėࡾşқपεǣࢍǶìڷͿşėۆࡾ

şə2.5 nmقԴ3.2 nmͿݒÀॠٕɰ. ॢठ, Ҽशϸۺ

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Fig. 6. Pore diameter distribution of MCM-41.

Fig. 7. N2 isotherm of SBA-15.

Fig. 8. Pore diameter distribution of SBA-15.

ę şė ҙक़ə ÁÁ 808 m²/g, 0.64 cm³/gقԴ 492 m²/g, 0.46 cm³/gͿÇՙॠٕɰ. սݒşقۆ३şėۋ

Иȃݓ϶ şėࡾşə ࠶ݓČ, Ҽशϸۺę şė ҙक़ə

Çՙॢ ìڷͿ ࣺɳʽɰ.

ںFig. 7ۆAٮBقǣࢍǴؽČ, şėࡾşқपəFig. 8 Aٮ Bق ǣࢍǴؽɰ. Ŕ Āę, SBA-15ۆ ąڍقə

قəࢀ޲ۋ۾ۋǣࢍǣݓ؍ؕɰ. ۋəSBA-15 ०Ձ

֨, blockܼ०ߕεۋڌॠيşėѹۋԜʂۺڷͿ˃ƃ ڏНՁقşۍॢìڷͿ҃ۍɰ. Ҽशϸۺڹ330 m²/g قԴ 352 m²/gͿ ǣࢍǮČ, şė ҙक़ٮ ࡾşə ÁÁ

0.51 cm³/gٮ6.0 nm ŔνČ0.55 cm³/g, 5.4 nmͿঝۍ

ʼؽɰ.

˰͆ԴսݒşقʂॢǴĵՁڹSBA-15ÀMCM-41

҃ɰ̬رǫںঝۍॠٕɰ. ०ՁНݗۆǴĵՁڹ֬ॹ ۆۦইՁقٖॳںй࠘дͿڿڌ֬ॹ֨SBA-15ں

ԐڌॠəìۋۺۼॣìڷͿࣺɳʽɰ. ̚ॢ, ǴĵՁڹ

०ՁНݗۆşė࣢Ձقۆ३ٖॳںыڷдͿġйͿҙ ࢢ०Ձʽϭܓप֟֬͠νࠢقԴʪʴێॣìڷͿࣺɳ ʽɰ.

Ā΁

ٍ҆ĵقԴə֬Ǵ֥ʪεܓۼॣսەəۙڱܓ֥

ۦͿڿڌÀɠՁںࣺɳॠşڦ३ϭܓप֟֬͠νࠢε

ʂԜڷͿড়·ѓ֥࣢ՁںܓԐॠٕɰ. ०Ձںڦॢ֬ν

ࠢڙڷͿտս֬νࠢ֨أۍTEOSٮġйεটڌॠ يϭܓप֟֬͠νࠢε܃ܓॠيНՁںҼİॠČ, ড়·

ѓ֥ՁںथÀॠٕɰ. ŔνČড়·ѓ֥थÀۻę঳ۆ

НՁѺজεࠑ܁॥ڷͿ׆սݒşقʂॢ०ՁНݗۆ

ǴĵՁںथÀॠٕɰ. ŔĀęɰڼęÏڹĀ΁ںصں

ս ەؽɰ.

1.߻ьНݗق˰͆०Ձʽϭܓप֟֬͠νࠢۆНՁқ ԵĀę, տսॢ֬νࠢ֨أۍTEOSε߻ьНݗͿ

०ՁॢMCM-41ęSBA-15ۆҼशϸۺ, ߪşėҙक़

ŔνČथŒşėࡾşəÁÁ930 m²/g, 0.79 cm³/g, 2.9 nmٮ816 m²/g, 0.90 cm³/g, 5.4 nmͿǣࢍǮČ, ġйε߻ьНݗͿ०ՁॢM-MCM-41ęM-SBA-15 ۆНՁڹÁÁ507 m²/g, 0.45 cm³/g, 3.3 nm ŔνČ

330 m²/g, 0.54 cm³/g, 6.0 nmͿқԵʼؽɰ.

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2. ۙڱܓ֥ۦͿۆڿڌÀɠՁ؎؉҃şڦ३ϭܓप͠

֟֬νࠢۆড়·ѓ֥࣢ՁںथÀॢĀę, MCM41ę

M-MCM-41ۆ ড়·ѓ֥͟ڹ ÁÁ 143.7 g/m², 27.6 g/m²ٮ159.4 g/m², 46.5 g/m²ۋČ, SBA-15, M-SBA-15 ۆ ড়ѓ֥͟ڹ ÁÁ 190.7 g/m², 117.3 g/m²ٮ

242.7 g/m², 131.6 g/m²Ϳտսϭܓप֟֬͠νࠢ҃

ɰġйεۋڌॠي०Ձॢϭܓप֟֬͠νࠢÀʌ

ȭڹ ড়·ѓ֥ՁںǣࢍǸں ঝۍॠٕɰ.

3. ϭܓşėۆսݒşقʂॢǴĵՁںथÀॠşڦ३

ড়·ѓ֥ थÀ ۻę ঳ۆ НՁ Ѻজε ࠑ܁ॢ Āę, MCM-41ڹԜ٣قԴۆսݒşٖॳχڷͿʪҼशϸ ۺę şė ҙक़ə 808 m²/g, 0.64 cm³/gقԴ 492 m²/g, 0.46 cm³/gͿÇՙॠČ, şėۆࡾşə2.5 nm قԴ3.2 nmͿݒÀॢъϸ, SBA-15ۆąڍəНՁ ۆѺজÀäۆػؽɰ. ۋəblockܼ०ߕεۋڌॠ يşėѹۋԜʂۺڷͿ˃ƃڏНՁقşۍॢìۋ ɰ. ˰͆ԴġйͿҙࢢ०ՁॢM-SBA-15Àۙڱܓ

֥ۦͿۆ ڿڌ ÀɠՁۋ ȭڹ ìڷͿ ࣺɳʽɰ.

޷ČЛॶ

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ୢੰ෮

ইۦ ॢتʂॡİ ۙڙঞąėॡę ԵԐ ܖغ (欧G 彳櫾躇G 缧48嘳G 缧1埲G 垾畢)

ࢮ୪෮

ইۦ ॢĶġ३ěνėɳ ġ३şցٍĵՙ ٍĵڙ (欧G 彳櫾躇G 缧48嘳G 缧1埲G 垾畢)

ࢮ୍֜

1981țॢتʂॡİۙڙėॡęėॡԐ 1984țThe Univ. of Tokyo ۙڙėॡę

ėॡԵԐ

1988țThe Univ. of Tokyo ۙڙėॡę

ėॡчԐ

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