Article(id=1319222740809269317, tenantId=1146029695717560320, journalId=1263187385517883426, issueId=1319222716851405704, articleNumber=null, orderNo=null, doi=10.14062/j.issn.0454-5648.20230070, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1676304000000, receivedDateStr=2023-02-14, revisedDate=1677340800000, revisedDateStr=2023-02-26, acceptedDate=null, acceptedDateStr=null, onlineDate=1792456811381, onlineDateStr=2026-10-20, pubDate=1687190400000, pubDateStr=2023-06-20, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1792456811381, onlineIssueDateStr=2026-10-20, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1792456811381, creator=13701087609, updateTime=1792456811381, updator=13701087609, issue=Issue{id=1319222716851405704, tenantId=1146029695717560320, journalId=1263187385517883426, year='2023', volume='51', issue='6', pageStart='1373', pageEnd='1648', issueExtLink='null', onlineDate='null', pubDate='1687190400000', pubDateStr='2023-06-20', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=0, createTime=1792456805669, creator='13701087609', updateTime=1792456995739, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext={EN=IssueExt(id=1319223514108903801, tenantId=1146029695717560320, journalId=1263187385517883426, issueId=1319222716851405704, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1319223514108903802, tenantId=1146029695717560320, journalId=1263187385517883426, issueId=1319222716851405704, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null, downloadFileDto=null}, startPage=1572, endPage=1582, ext={EN=ArticleExt(id=1319222740998012998, articleId=1319222740809269317, tenantId=1146029695717560320, journalId=1263187385517883426, language=EN, title=Microscopic Characteristics and Activity of Light-Burned Magnesia, columnId=1263922769897599102, journalTitle=Journal of the Chinese Ceramic Society, columnName=Research Articles, runingTitle=null, highlight=null, articleAbstract=

Activity is a main application characteristic that is closely related to the microstructure of light-burned magnesia. The light-burned magnesia was obtained via calcining macrocrystalline magnesite powder at 700-1 100 ℃. The cell parameter, grain size, crystallinity, specific surface area, pore diameter distribution, specific pore volume, average pore diameter, activity and microstructure of light-burned magnesia at different temperatures were characterized. The particulate structure of light-burned magnesia was investigated by thermogravimetry based on the non-isothermal reaction kinetics theory, and the mechanism of the particulate structure evolution with temperature and its influence on the activity of light-burned magnesia were further analyzed. The results show that the cell parameter a0 of light-burned magnesia firstly reduces and then becomes stable, and the grain size increases while the specific surface area decreases gradually when the calcination temperature increases from 700 ℃ to 1 100 ℃. However, the activity of light-burned magnesia does not comply with this rule, and reaches the maximum value at 800 ℃. The thermal decomposition of macrocrystalline magnesite powder is controlled via the chemical reaction at the phase interface. The decomposition product, i.e., the light-burned magnesia 'pseudo' particles, is composed of magnesia microcrystals and connected a pore network structure. The sintering of magnesia microcrystals affect the "pseudo" particle structure of light-burned magnesia as the calcination temperature increases, thus affectingits activity. The sample light-burned at 800 ℃ has a smaller grain size, a lower crystallinity, a larger specific pore volume, and a largest average pore size due to the lattice adjustment, which is conducive to the penetration of the reactant solution into the particles and accelerates the reaction progression, leading to the maximum activity.

, authors=Yunqin GAO1, Jiawei WANG1, Xiaoli TIAN2, Yanlong YANG1, Xing HOU1, authorsList=Yunqin GAO, Jiawei WANG, Xiaoli TIAN, Yanlong YANG, Xing HOU, authorCompany=null, correspAuthors=null, authorNote=

GAO Yunqin (1972-), female, Master, Senior Engineer. E-mail:

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活性是轻烧氧化镁的主要应用特性,它与轻烧氧化镁的微观结构密切相关。将新疆某粗晶菱镁矿粉在700~1 100 ℃煅烧制得轻烧氧化镁,对不同温度轻烧氧化镁的晶胞参数、晶粒尺寸、结晶度、比表面积、孔径分布、比孔容、平均孔径、活性和显微结构等进行表征,利用TG结合非等温反应动力学理论研究轻烧氧化镁的微粒结构,分析该微粒结构随温度变化的机理及其对轻烧氧化镁活性的影响。结果表明:从700 ℃至1 100 ℃,轻烧氧化镁晶胞参数a0缩小并趋于稳定,晶粒尺寸逐渐增大,比表面积逐渐减小,但其活性变化并不遵从这一规律,在800 ℃时活性最高;粗晶菱镁矿粉的热分解受相界面上的化学反应所控制,分解产物—轻烧氧化镁“假象”微粒由氧化镁微晶和贯通的气孔网络结构组成;随煅烧温度升高,氧化镁微晶的烧结影响轻烧氧化镁“假象”微粒结构,进而影响其活性;800 ℃轻烧试样晶粒尺寸较小,结晶度较低,比孔容较大,且由于晶格调整使其平均孔径最大,大的孔径有利于溶液进入微粒内部,促进反应进行,因此其活性最高。

, authors=高云琴1, 王嘉玮1, 田晓利2, 杨彦龙1, 侯星1, authorsList=高云琴, 王嘉玮, 田晓利, 杨彦龙, 侯星, authorCompany=null, correspAuthors=null, authorNote=

高云琴(1972—),女,硕士,高级工程师。

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GAO Yunqin (1972-), female, Master, Senior Engineer. E-mail:

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轻烧氧化镁的微观特征及其活性
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高云琴 1 , 王嘉玮 1 , 田晓利 2 , 杨彦龙 1 , 侯星 1
硅酸盐学报 | 研究论文 2023,51(6): 1572-1582
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硅酸盐学报 |研究论文 2023 , 51 (6) : 1572 -1582
轻烧氧化镁的微观特征及其活性
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高云琴1 , 王嘉玮1, 田晓利2, 杨彦龙1, 侯星1
作者信息
  • 1.西安建筑科技大学材料科学与工程学院,无机非金属材料国家级实验教学示范中心,西安 710055
  • 2.濮阳濮耐高温材料(集团)股份有限公司,河南 濮阳 457100
作者简介:

高云琴(1972—),女,硕士,高级工程师。

Microscopic Characteristics and Activity of Light-Burned Magnesia
Yunqin GAO1 , Jiawei WANG1, Xiaoli TIAN2, Yanlong YANG1, Xing HOU1
Affiliations
  • 1.National Experimental Teaching Demonstration Center for Inorganic Nonmetallic Materials, College of Materials Science and Engineering, Xi'an University of Architecture & Technology, Xi'an 710055, China
  • 2.Puyang Refractories Group Co., Ltd., Puyang, 457100, Henan, China
  • GAO Yunqin (1972-), female, Master, Senior Engineer. E-mail:

出版时间: 2023-06-20 doi: 10.14062/j.issn.0454-5648.20230070
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活性是轻烧氧化镁的主要应用特性,它与轻烧氧化镁的微观结构密切相关。将新疆某粗晶菱镁矿粉在700~1 100 ℃煅烧制得轻烧氧化镁,对不同温度轻烧氧化镁的晶胞参数、晶粒尺寸、结晶度、比表面积、孔径分布、比孔容、平均孔径、活性和显微结构等进行表征,利用TG结合非等温反应动力学理论研究轻烧氧化镁的微粒结构,分析该微粒结构随温度变化的机理及其对轻烧氧化镁活性的影响。结果表明:从700 ℃至1 100 ℃,轻烧氧化镁晶胞参数a0缩小并趋于稳定,晶粒尺寸逐渐增大,比表面积逐渐减小,但其活性变化并不遵从这一规律,在800 ℃时活性最高;粗晶菱镁矿粉的热分解受相界面上的化学反应所控制,分解产物—轻烧氧化镁“假象”微粒由氧化镁微晶和贯通的气孔网络结构组成;随煅烧温度升高,氧化镁微晶的烧结影响轻烧氧化镁“假象”微粒结构,进而影响其活性;800 ℃轻烧试样晶粒尺寸较小,结晶度较低,比孔容较大,且由于晶格调整使其平均孔径最大,大的孔径有利于溶液进入微粒内部,促进反应进行,因此其活性最高。

粗晶菱镁矿  /  轻烧氧化镁  /  活性

Activity is a main application characteristic that is closely related to the microstructure of light-burned magnesia. The light-burned magnesia was obtained via calcining macrocrystalline magnesite powder at 700-1 100 ℃. The cell parameter, grain size, crystallinity, specific surface area, pore diameter distribution, specific pore volume, average pore diameter, activity and microstructure of light-burned magnesia at different temperatures were characterized. The particulate structure of light-burned magnesia was investigated by thermogravimetry based on the non-isothermal reaction kinetics theory, and the mechanism of the particulate structure evolution with temperature and its influence on the activity of light-burned magnesia were further analyzed. The results show that the cell parameter a0 of light-burned magnesia firstly reduces and then becomes stable, and the grain size increases while the specific surface area decreases gradually when the calcination temperature increases from 700 ℃ to 1 100 ℃. However, the activity of light-burned magnesia does not comply with this rule, and reaches the maximum value at 800 ℃. The thermal decomposition of macrocrystalline magnesite powder is controlled via the chemical reaction at the phase interface. The decomposition product, i.e., the light-burned magnesia 'pseudo' particles, is composed of magnesia microcrystals and connected a pore network structure. The sintering of magnesia microcrystals affect the "pseudo" particle structure of light-burned magnesia as the calcination temperature increases, thus affectingits activity. The sample light-burned at 800 ℃ has a smaller grain size, a lower crystallinity, a larger specific pore volume, and a largest average pore size due to the lattice adjustment, which is conducive to the penetration of the reactant solution into the particles and accelerates the reaction progression, leading to the maximum activity.

macrocrystalline magnesite  /  light-burned magnesia  /  activity
高云琴, 王嘉玮, 田晓利, 杨彦龙, 侯星. 轻烧氧化镁的微观特征及其活性. 硅酸盐学报, 2023 , 51 (6) : 1572 -1582 . DOI: 10.14062/j.issn.0454-5648.20230070
Yunqin GAO, Jiawei WANG, Xiaoli TIAN, Yanlong YANG, Xing HOU. Microscopic Characteristics and Activity of Light-Burned Magnesia[J]. Journal of the Chinese Ceramic Society, 2023 , 51 (6) : 1572 -1582 . DOI: 10.14062/j.issn.0454-5648.20230070
  • 国家自然科学基金(52272027)
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doi: 10.14062/j.issn.0454-5648.20230070
  • 接收时间:2023-02-14
  • 首发时间:2026-10-20
  • 出版时间:2023-06-20
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  • 收稿日期:2023-02-14
  • 修回日期:2023-02-26
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国家自然科学基金(52272027)
作者信息
    1.西安建筑科技大学材料科学与工程学院,无机非金属材料国家级实验教学示范中心,西安 710055
    2.濮阳濮耐高温材料(集团)股份有限公司,河南 濮阳 457100
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2种不同金属材料的力学参数
科
Family
属数
Number of
genus
种数
Number of
species
占总种数比例
Percentage of
total species (%)
属
Genus
种数
Number of
species
占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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