Synthesis of SrO–Al<sub>2</sub>O<sub>3</sub> Solid Base Catalysts from Strontium Hydroxide and Aluminum Alkoxide by a Solid-liquid Interface Reaction

DOI Web Site Web Site 1 Citations 29 References Open Access

Bibliographic Information

Other Title
  • 水酸化ストロンチウムとアルミニウムアルコキシドとの固–液界面の反応によるSrO–Al<sub>2</sub>O<sub>3</sub>固体塩基触媒の合成
  • Synthesis of SrO-Al₂O₃ Solid Base Catalysts from Strontium Hydroxide and Aluminum Alkoxide by a Solid-liquid Interface Reaction

Search this article

Description

<p>Highly dispersed SrO in amorphous Al2O3, SrO–Al2O3, was synthesized by solid-liquid interface reaction of Sr(OH)2 · 8H2O in the solid phase with Al(OCH(CH3)2)3 dissolved in 2-propanol. The water of crystallization in Sr(OH)2 · 8H2O was consumed for the hydrolysis of Al(OCH(CH3)2)3. SrO–Al2O3 catalyst synthesized by solid-liquid interface reaction of equimolar amounts of Sr(OH)2 · 8H2O and Al(OCH(CH3)2)3, then heat treated at 673 K, exhibited the highest activity among the prepared catalysts for the base-catalyzed retro-aldol reaction of diacetone alcohol. Catalytic activity of SrO–Al2O3 catalyst calcined at 673 K was twice that of SrO–Al2O3 catalyst prepared by physical mixing of Sr(OH)2 · 8H2O with Al2O3. Active SrO–Al2O3 catalyst was obtained by heating at a temperature just below that of Sr3Al2O6 crystallization. Formation of SrO by heat treatment at 673 K was confirmed using X-ray absorption near edge structure analysis. The SrO particle size was too small for detection by powder X-ray diffraction. We found that interface reaction of a metal hydroxide in the solid phase with an alkoxide in the liquid phase is useful for the preparation of well-dispersed mixed metal oxides under mild conditions.</p>

Journal

Citations (1)*help

See more

References(29)*help

See more

Related Projects

See more

Keywords

Details 詳細情報について

Report a problem

Back to top