Effect of pH of precipitation on the preparation of high surface area aluminas from nitrate solutions

被引：48

作者：

Hellgardt, K ^{[1
]}

Chadwick, D ^{[1
]}

机构：

[1] Univ London Imperial Coll Sci Technol & Med, Dept Chem Engn & Chem Technol, London SW7 2BY, England

来源：

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH | 1998年 / 37卷 / 02期

关键词：

D O I：

10.1021/ie970591a

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The influence of the pH of precipitation on the morphology and the nitrate retention of aluminas prepared from nitrate solutions has been investigated. pH control causes the BET surface area of gamma-alumina to vary between 180 and 410 m(2)/g and determines the extent of microporosity within the aluminas. Particle sizes derived from XRD data are compared to values quoted in the open literature. Strong retention of nitrate ion was found for precipitation at pH below the PZC; at the same time, the precipitate density was sharply lowered. However, nitrate retention did not adversely affect the development of surface area following heat treatment.

引用

页码：405 / 411

页数：7

共 19 条

[11] MONTANARO L, 1989, AM CERAM SOC BULL, V68, P1017
[12] MOLYBDENA ON TITANIA .1. PREPARATION AND CHARACTERIZATION BY RAMAN AND FOURIER-TRANSFORM INFRARED-SPECTROSCOPY
NG, KYS
GULARI, E
[J]. JOURNAL OF CATALYSIS, 1985, 92 (02) : 340 - 354
[13] INVESTIGATION OF PH-DEPENDENT GEL STRUCTURE IN AMORPHOUS CARBONATE-CONTAINING ALUMINUM HYDROXIDE BY VISCOMETRY, FIBER OPTIC DOPPLER ANEMOMETRY, AND FREEZE-FRACTURE FREEZE-ETCH SCANNING ELECTRON-MICROSCOPY
NIXON, PR
WHITE, JL
HEM, SL
[J]. JOURNAL OF COLLOID AND INTERFACE SCIENCE, 1987, 120 (02) : 312 - 319
[14] Ono T., 1983, PREPARATION CATALYST, P631
[15] ISOELECTRIC POINTS OF SOLID OXIDES SOLID HYDROXIDES AND AQUEOUS HYDROXO COMPLEX SYSTEMS
PARKS, GA
[J]. CHEMICAL REVIEWS, 1965, 65 (02) : 177 - +
[16] REPORTING PHYSISORPTION DATA FOR GAS SOLID SYSTEMS WITH SPECIAL REFERENCE TO THE DETERMINATION OF SURFACE-AREA AND POROSITY (RECOMMENDATIONS 1984)
SING, KSW
EVERETT, DH
HAUL, RAW
MOSCOU, L
PIEROTTI, RA
ROUQUEROL, J
SIEMIENIEWSKA, T
[J]. PURE AND APPLIED CHEMISTRY, 1985, 57 (04) : 603 - 619
[17] THE CONTROL OF PORE-SIZE IN ALUMINA CATALYST SUPPORTS - A REVIEW
TRIMM, DL
STANISLAUS, A
[J]. APPLIED CATALYSIS, 1986, 21 (02): : 215 - 238
[18] THE PREPARATION OF CONTROLLED PORE ALUMINA
VOGEL, RF
MARCELIN, G
KEHL, WL
[J]. APPLIED CATALYSIS, 1984, 12 (02): : 237 - 248
[19] WEST RC, 1987, CRC HDB CHEM PHYSICS, pB68

← 1 2 →