Green synthesis of bisphenol F over 12-phosphotungstic acid supported on acid-activated palygorskite

RSC Advances ◽  
2015 ◽  
Vol 5 (77) ◽  
pp. 62394-62401 ◽  
Author(s):  
Ran Liu ◽  
Xiaozhen Niu ◽  
Xinnian Xia ◽  
Zebing Zeng ◽  
Guozhong Zhang ◽  
...  
Keyword(s):  
Green Synthesis ◽  
Solid Acid ◽  
Phosphotungstic Acid ◽  
Solid Acid Catalysts ◽  
Acid Catalysts ◽  
Bisphenol F ◽  
Mild Conditions

Hydroxyalkylation of phenol to bisphenol F under mild conditions over various solid acid catalysts.

scholarly journals Niobium phosphotungstates: excellent solid acid catalysts for the dehydration of fructose to 5-hydroxymethylfurfural under mild conditions

RSC Advances ◽  
2018 ◽  
Vol 8 (57) ◽  
pp. 32423-32433 ◽  
Author(s):  
Guo Qiu ◽  
Xincheng Wang ◽  
Chongpin Huang ◽  
Yingxia Li ◽  
Biaohua Chen
Keyword(s):  
Heterogeneous Catalyst ◽  
Solid Acid ◽  
Solid Acid Catalysts ◽  
Acid Catalysts ◽  
Mild Conditions

A 5-HMF yield of 96.7% was obtained over an excellent heterogeneous catalyst NbPW-06 in DMSO at 80 °C.

Superior Performance of Metal-Organic Frameworks over Zeolites as Solid Acid Catalysts in the Prins Reaction: Green Synthesis of Nopol

ChemSusChem ◽  
2013 ◽  
Vol 6 (5) ◽  
pp. 865-871 ◽  
Author(s):  
Maksym Opanasenko ◽  
Amarajothi Dhakshinamoorthy ◽  
Young Kyu Hwang ◽  
Jong-San Chang ◽  
Hermenegildo Garcia ◽  
...  
Keyword(s):  
Green Synthesis ◽  
Solid Acid ◽  
Metal Organic Frameworks ◽  
Solid Acid Catalysts ◽  
Superior Performance ◽  
Acid Catalysts ◽  
Prins Reaction ◽  
Metal Organic

scholarly journals Green Synthesis of Benzylated Aromatics Using Iron Loaded Mesoporous Materials

2008 ◽  
Vol 5 (3) ◽  
pp. 467-472 ◽  
Author(s):  
Muthuraj Esther Leena Preethi ◽  
Shanmugam Revathi ◽  
Thiripuranthagan Sivakumar
Keyword(s):  
Green Synthesis ◽  
Mesoporous Materials ◽  
Solid Acid ◽  
Catalytic Amount ◽  
Solid Acid Catalysts ◽  
Acid Catalysts ◽  
Mcm 41

Syntheses of benzylated aromatics like diphenylmethane and its derivatives by the condensation of benzene or toluene oro-xylene with benzylchloride or 4-methylbenzylchloride in the presence of a catalytic amount of various iron loaded mesoporous solid acid catalysts such as Fe/Al-MCM-41 (Si/Al=25), Fe/Al-MCM-41 (Si/Al=50) and Fe/Al-MCM-41 (Si/Al=100) are reported.

Metal ion-exchanged zeolites as highly active solid acid catalysts for the green synthesis of glycerol carbonate from glycerol

RSC Advances ◽  
2015 ◽  
Vol 5 (19) ◽  
pp. 14286-14293 ◽  
Author(s):  
Vijaykumar S. Marakatti ◽  
Anand B. Halgeri
Keyword(s):  
Green Synthesis ◽  
Metal Ion ◽  
Solid Acid ◽  
Solid Acid Catalysts ◽  
Glycerol Carbonate ◽  
Acid Catalysts ◽  
Highly Efficient ◽  
Highly Active

The application of metal ion-exchanged zeolites as highly efficient catalysts for the synthesis of glycerol carbonate from glycerol carbonylation is reported.

scholarly journals GREEN SYNTHESIS OF ISOPULEGOL FROM CITRONELLAL CATALYSED BY ZEOLITE BASED SOLID ACID CATALYSTS

2014 ◽  
Vol 2 (1) ◽  
Author(s):  
Indri Badria Adilina ◽  
Egi Agustian
Keyword(s):  
Green Synthesis ◽  
Solid Acid ◽  
Solid Acid Catalysts ◽  
Acid Catalysts

Zeolit alam (NZ) telah dimodifikasi dengan penambahan asam (H-NZ) dan diaplikasikan sebagai katalis asam padat untuk green sintesis isopulehol dari minyak sereh wangi. Sintesis ini menlibatkan reaksi siklisasi sitronelal menjai disopulegol pada suhu 50 sampai 120oC. Aktivitas katalis H-NZ terbukti lebih tinggi dari katalis H-ZSM5 yang tersedia di pasar dan lebih unggul dari katalis asam padat berbasis bentonit. Perolehan terbaik sebesar 87% isopulegol diperoleh menggunakan katalis H-NZ pada 100oC selama 3 jam tanpa penggunaan pelarut reaksi.

scholarly journals Corncob residue as heterogeneous acid catalyst for green synthesis of biodiesel: A short review

2021 ◽  
Vol 6 (2) ◽  
pp. 60-68
Author(s):  
Primata Mardina ◽  
Hesti Wijayanti ◽  
Abubakar Tuhuloula ◽  
Erita Hijriyati ◽  
Sarifah
Keyword(s):  
Green Synthesis ◽  
Solid Acid ◽  
Fatty Acid Content ◽  
Solid Acid Catalyst ◽  
Acid Catalyst ◽  
Raw Material ◽  
Biodiesel Production ◽  
Solid Acid Catalysts ◽  
Acid Catalysts ◽  
Heterogeneous Acid Catalyst

The utilization of an appropriate catalyst in biodiesel production depends on the free fatty acid content of vegetable oil as a feedstock. Recently, heterogeneous acid catalysts are widely chosen for biodiesel production. However, these catalysts are non-renewable, highly expensive and low stability. Due to the aforementioned drawbacks of commercial heterogeneous acid catalyst, a number of efforts have been made to develop renewable green solid acid catalysts derived from biomass. Published literature revealed that the application of the biomass derived solid acid catalysts can achieve up to 98% yield of biodiesel. This article focused on corncob as raw material in solid acid catalyst preparation for biodiesel production. The efficient preparation method and performance comparation are discussed here. The corncob derived heterogeneous acid catalysts provides an environmentally friendly and green synthesis for biodiesel production.

Metal ion-exchanged zeolites as solid acid catalysts for the green synthesis of nopol from Prins reaction

2014 ◽  
Vol 4 (11) ◽  
pp. 4065-4074 ◽  
Author(s):  
Vijaykumar S. Marakatti ◽  
Anand B. Halgeri ◽  
Ganapati V. Shanbhag
Keyword(s):  
Green Synthesis ◽  
Metal Ion ◽  
Solid Acid ◽  
Solid Acid Catalysts ◽  
Acid Catalysts ◽  
Prins Reaction ◽  
Highly Active

The application of metal ion-exchanged zeolites as highly active and selective catalysts for the synthesis of nopol from the Prins reaction of β-pinene is reported.

scholarly journals H3PW12O40/SBA-15 for the Solventless Synthesis of 3-Substituted Indoles

Catalysts ◽  
2019 ◽  
Vol 9 (5) ◽  
pp. 409 ◽  
Author(s):  
Tayebee ◽  
Lee ◽  
Frattini ◽  
Rostami
Keyword(s):  
Solid Acid ◽  
Catalytic Efficiency ◽  
Aromatic Aldehydes ◽  
Solid Acid Catalysts ◽  
High Dispersion ◽  
Acid Catalysts ◽  
Strongly Correlated ◽  
Wet Impregnation ◽  
Mild Conditions ◽  
Solventless Synthesis

A family of silica-supported H3PW12O40 (HPW) solid acid catalysts was prepared by wet impregnation of mesoporous SBA-15 and investigated for the solventless synthesis of 3-substituted indoles under mild conditions. Mesoporous SBA-15 facilitated a high dispersion of immobilised H3PW12O40, significantly improving the catalytic efficiency of the heteropolyacid for the desired multi-component transformation. The yield of 3-substituted indoles strongly correlated with HPW loading (which spanned 3.2–51.6 wt %) and corresponding acid strength; the 51.6 wt % HPW/SBA-15 delivered 81% yield of 2-[(1H-indol-3-yl)(phenyl)methyl]malononitrile, approximately five times greater than that of the unsupported HPW, and exhibited a broad substrate scope for aromatic aldehydes.

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