MOR/DEA/TEA mixed-template synthesis of CHA-type SAPO with different silica and alumina sources

2021 ◽  
Author(s):  
Marzieh Hamidzadeh ◽  
Mohadese Nazari ◽  
Maryam Rahimi Fard
Keyword(s):  
Sodium Silicate ◽  
Aluminum Hydroxide ◽  
Silicic Acid ◽  
Template Synthesis ◽  
Aluminum Phosphate ◽  
Silica Sol ◽  
Tetraethyl Orthosilicate ◽  
Aluminum Isopropoxide ◽  
Different Sources ◽  
Mixed Template

We investigated the effects of different sources of alumina (Pseudo-boehmite, Aluminum hydroxide, Aluminum tri-sec-butylate, Aluminum isopropoxide, and Aluminum phosphate) and silica (Silica sol, Silicic acid, Tetraethyl orthosilicate, and sodium silicate)...

INFLUENCE OF ALUMINUM HYDROXIDE ON THE SOLUBILITY OF SILICIC ACID IN RUMEN FLUID AND THE ABSORPTION OF SILICIC ACID FROM THE DIGESTIVE TRACT OF RUMINANTS

1977 ◽  
Vol 57 (2) ◽  
pp. 239-244 ◽  
Author(s):  
C. B. BAILEY
Keyword(s):  
Aluminum Hydroxide ◽  
Silicic Acid ◽  
Rumen Fluid ◽  
Aluminum Concentration ◽  
Feeding Trial ◽  
Insoluble Complex ◽  
Prairie Grass ◽  
Aluminum Sulphate ◽  
Fluid Concentration ◽  
Calculus Formation

Aluminum hydroxide was precipitated from aqueous solutions containing aluminum sulphate and silicic acid by adjusting the pH to within the range 6–7.5. The precipitated aluminum hydroxide formed an insoluble complex with the silicic acid and, in so doing, reduced the concentration of soluble silicic acid from 22 mg/dl to less than 5 mg/dl. Maximum reduction in silicic acid concentration occurred when the aluminum concentration was 30 mg/dl or more. The effects of adding rumen fluid to the solutions or of varying pH over the range 6–7.5 were small except at the lowest level of aluminum used (15 mg/dl). Aluminum sulphate, included in a prairie grass hay diet at 1.57%, reduced the concentration of silicic acid in the rumen fluid of cattle from 19.2 to 16.9 mg/dl. The same diet given to sheep had no significant effect on excretion of silicic acid in urine. A feeding trial with calves to assess the effects of the aluminum sulphate diet on calculus formation was not completed because the calves ate very little of the diet. The results confirmed earlier findings that aluminum hydroxide has a strong affinity for silicic acid. However, failure of the aluminum sulphate diet to lower rumen fluid concentration or urinary excretion of silicic acid to any great extent, and the low payability of the diet for calves, suggests that aluminum sulphate cannot be used to reduce absorption and excretion of silicic acid in calves on diets predisposing to the formation of siliceous calculi.

scholarly journals Lime compounds for restoration and decoration of building walls

2021 ◽  
Vol 2124 (1) ◽  
pp. 012022
Author(s):  
V I Loganina ◽  
M V Zaytseva ◽  
T V Uhaeva
Keyword(s):  
Structure Formation ◽  
Silicic Acid ◽  
Liquid Glass ◽  
Chemical Interaction ◽  
Vertical Surface ◽  
Silica Sol ◽  
Optimal Thickness ◽  
Plastic Strength ◽  
Building Walls ◽  
Heat Released

Abstract Information on the effect of a polysilicate solution obtained by mixing liquid glass with a silicic acid sol on the structure formation of lime compositions is presented. It was revealed that the amount of specific heat released when lime is wetted with a polysilicate solution is greater than when lime is wetted with water. This is due to the additionally released heat due to the chemical interaction of lime with polysilicate solution. It was found that the introduction of a polysilicate solution accelerates the development of plastic strength. For comparison, we used liquid glass and a sol of silicic acid as an additive. The synergistic effect of the influence of the polysilicate solution on the structure formation of lime finishing compositions was established, which manifests itself in the acceleration of the set plastic strength in comparison with silica sol and water glass. It has been established that the introduction of a polysilicate solution into the lime mixture formulation contributes to an increase in the resistance to slipping of the finishing layer. The optimal thickness of the finishing layer was determined, which is 20 mm, at which sliding from the vertical surface is not observed.

Research on the Preparation of Polyferric Silicate Chloride (PFSC) and Application on Algae Wastewater Treatment

2010 ◽  
Vol 154-155 ◽  
pp. 230-234 ◽  
Author(s):  
Li Ping Wang ◽  
Xiao Fei Yan ◽  
Xia Xu ◽  
Ai Bin Xu ◽  
Nai Yuan Gao
Keyword(s):  
Wastewater Treatment ◽  
Reaction Time ◽  
Chlorophyll A ◽  
Influencing Factors ◽  
Sodium Silicate ◽  
Silicic Acid ◽  
Raw Materials ◽  
Coagulation Performance ◽  
Coagulation Mechanism ◽  
Removal Efficiencies

A new polyferric silicate chloride(PFSC) was prepared by using sodium silicate, ferric chloride as raw materials, at the same time, its coagulation performance and the influencing factors were observed. The water containing algae was processed by PFSC coagulant and coagulation mechanism were discussed. The results showed that the best reaction time of PFSC preparation was 1h, temperature was 40°Cand Fe/Si mole ratio was 1. The removal efficiencies of chlorophyll a and turbidity were 82.40% and 94.97% respectively at 14mgFe•L-1 of dosage. Coagulation mechanism of PFSC is considered as the cooperation of oxidization/adsorption/charge-neutralization, adsorption-bridging and sweeping, which is the effect of silicic acid, iron and iron hydrolysate on the suspended particles in wastewater.

Influence of the molecular-oriented structure of ionic liquids on the crystallinity of aluminum hydroxide prepared by a sol–gel process in ionic liquids

2015 ◽  
Vol 17 (28) ◽  
pp. 18705-18709 ◽  
Author(s):  
K. Kinoshita ◽  
H. Yanagimoto ◽  
T. Suzuki ◽  
H. Minami
Keyword(s):  
Ionic Liquids ◽  
Aluminum Hydroxide ◽  
Sol Gel ◽  
Aluminum Isopropoxide ◽  
Oriented Structure ◽  
Sol Gel Process

The influence of the structure of ionic liquids on the crystallinity of aluminum hydroxide (Al(OH)3) prepared by a sol–gel process with aluminum isopropoxide (Al(OPri)3) in imidazolium-based ionic liquids was investigated.

Aluminum phosphate shows more adjuvanticity than aluminum hydroxide in recombinant hepatitis B vaccine formulation

2008 ◽  
Vol 136 ◽  
pp. S209
Author(s):  
Mohammad Reza Fazeli ◽  
Rassoul Dinarvand ◽  
Nasrin Samadi ◽  
Arash Mahboubi ◽  
Hooshmand Ilka ◽  
...  
Keyword(s):  
Hepatitis B ◽  
Aluminum Hydroxide ◽  
Aluminum Phosphate ◽  
Hepatitis B Vaccine ◽  
Vaccine Formulation ◽  
Recombinant Hepatitis
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