Synthesis of uniform and stable millimeter-sized mesoporous silica ropes by the addition of polymer and ammonia hydrothermal treatment

Hong Ping Lin; Lu Yi Yang; Chung Yuan Mou; Huang Kuei Lee; Shang Bin Liu

doi:10.1016/s0167-2991(00)80190-1

Synthesis of uniform and stable millimeter-sized mesoporous silica ropes by the addition of polymer and ammonia hydrothermal treatment

Hong Ping Lin, Lu Yi Yang, Chung Yuan Mou, Huang Kuei Lee, Shang Bin Liu

Research output: Contribution to journal › Article › peer-review

10 Citations (Scopus)

Abstract

The addition of water-soluble polymers such as polyethylene oxide (PEO) or polyvinyl alcohol (PVA) into the synthetic mixture of the C_nTMAX-HNO₃-TEOS-H₂O system (n = 16 or 18; X = Br or Cl) under shear flow is found to promote uniformity and elongation of rope-like mesoporous silica. The millimeter-scaled mesoporous silica ropes are found to possess a three-level hierarchical structure. The addition of water-soluble polymer does not affect the physical properties of the silica ropes. Moreover, further hydrothermal treatment of the acid-made material under basic ammonia conditions effectively promotes reconstruction of the silica nanochannels while maintaining the rope-like morphology. As a result, a notable enhancement in both thermal and hydrothermal stability is found.

Original language	English
Pages (from-to)	7-14
Number of pages	8
Journal	Studies in Surface Science and Catalysis
Volume	129
DOIs	https://doi.org/10.1016/s0167-2991(00)80190-1
Publication status	Published - 2000
Externally published	Yes

ASJC Scopus subject areas

Catalysis
Condensed Matter Physics
Physical and Theoretical Chemistry
Surfaces, Coatings and Films
Materials Chemistry

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10.1016/s0167-2991(00)80190-1

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title = "Synthesis of uniform and stable millimeter-sized mesoporous silica ropes by the addition of polymer and ammonia hydrothermal treatment",

abstract = "The addition of water-soluble polymers such as polyethylene oxide (PEO) or polyvinyl alcohol (PVA) into the synthetic mixture of the CnTMAX-HNO3-TEOS-H2O system (n = 16 or 18; X = Br or Cl) under shear flow is found to promote uniformity and elongation of rope-like mesoporous silica. The millimeter-scaled mesoporous silica ropes are found to possess a three-level hierarchical structure. The addition of water-soluble polymer does not affect the physical properties of the silica ropes. Moreover, further hydrothermal treatment of the acid-made material under basic ammonia conditions effectively promotes reconstruction of the silica nanochannels while maintaining the rope-like morphology. As a result, a notable enhancement in both thermal and hydrothermal stability is found.",

author = "Lin, {Hong Ping} and Yang, {Lu Yi} and Mou, {Chung Yuan} and Lee, {Huang Kuei} and Liu, {Shang Bin}",

note = "Funding Information: The authors wish to thank Mr. Chin-Yuan Tang for technical assistance in SEM and TEM microtome measurements and thank Profs. Soofm Cheng and Ben-Zu Wan for helpful discussions. This research has been partially supported by a grant from the Chinese Petroleum Corporation (87-S-032) and by the National Science Council, ROC. (NSC88-2113-M-002-027 to CYM; NSC88-2113-M-001-008 to SBL).",

year = "2000",

doi = "10.1016/s0167-2991(00)80190-1",

language = "English",

volume = "129",

pages = "7--14",

journal = "Studies in Surface Science and Catalysis",

issn = "0167-2991",

publisher = "Elsevier BV",

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TY - JOUR

T1 - Synthesis of uniform and stable millimeter-sized mesoporous silica ropes by the addition of polymer and ammonia hydrothermal treatment

AU - Lin, Hong Ping

AU - Yang, Lu Yi

AU - Mou, Chung Yuan

AU - Lee, Huang Kuei

AU - Liu, Shang Bin

N1 - Funding Information: The authors wish to thank Mr. Chin-Yuan Tang for technical assistance in SEM and TEM microtome measurements and thank Profs. Soofm Cheng and Ben-Zu Wan for helpful discussions. This research has been partially supported by a grant from the Chinese Petroleum Corporation (87-S-032) and by the National Science Council, ROC. (NSC88-2113-M-002-027 to CYM; NSC88-2113-M-001-008 to SBL).

PY - 2000

Y1 - 2000

N2 - The addition of water-soluble polymers such as polyethylene oxide (PEO) or polyvinyl alcohol (PVA) into the synthetic mixture of the CnTMAX-HNO3-TEOS-H2O system (n = 16 or 18; X = Br or Cl) under shear flow is found to promote uniformity and elongation of rope-like mesoporous silica. The millimeter-scaled mesoporous silica ropes are found to possess a three-level hierarchical structure. The addition of water-soluble polymer does not affect the physical properties of the silica ropes. Moreover, further hydrothermal treatment of the acid-made material under basic ammonia conditions effectively promotes reconstruction of the silica nanochannels while maintaining the rope-like morphology. As a result, a notable enhancement in both thermal and hydrothermal stability is found.

AB - The addition of water-soluble polymers such as polyethylene oxide (PEO) or polyvinyl alcohol (PVA) into the synthetic mixture of the CnTMAX-HNO3-TEOS-H2O system (n = 16 or 18; X = Br or Cl) under shear flow is found to promote uniformity and elongation of rope-like mesoporous silica. The millimeter-scaled mesoporous silica ropes are found to possess a three-level hierarchical structure. The addition of water-soluble polymer does not affect the physical properties of the silica ropes. Moreover, further hydrothermal treatment of the acid-made material under basic ammonia conditions effectively promotes reconstruction of the silica nanochannels while maintaining the rope-like morphology. As a result, a notable enhancement in both thermal and hydrothermal stability is found.

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SN - 0167-2991

VL - 129

SP - 7

EP - 14

JO - Studies in Surface Science and Catalysis

JF - Studies in Surface Science and Catalysis

ER -

Synthesis of uniform and stable millimeter-sized mesoporous silica ropes by the addition of polymer and ammonia hydrothermal treatment

Abstract

ASJC Scopus subject areas

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