eprintid: 765
rev_number: 7
eprint_status: archive
userid: 1193
dir: disk0/00/00/07/65
datestamp: 2019-12-19 05:48:33
lastmod: 2019-12-19 05:48:33
status_changed: 2019-12-19 05:48:33
type: article
metadata_visibility: show
creators_name: Elfia Siska Yasa Putri, Elfia
creators_name: Widajanti Wibowo, Widajanti
creators_name: Soleh Kosela, Soleh
creators_id: yasa_putri@yahoo.com
corp_creators: UHAMKA
title: Esterification of p-hydroxybenzoic acid with glucose
using a γ-Al2O3/SO4 catalyst
ispublished: pub
subjects: R1
subjects: RS
divisions: sch_med
abstract: Esterification of p-hydroxybenzoic acid with glucose can be expected to produce esters. The rate of esterification reaction is usually very slow and, therefore, needs an acid catalyst to accelerate it. This research examined the performance of a heterogeneous catalyst made of γ-Al2O3 impregnated with a protic acid, H2SO4. The heterogeneous catalyst, γ-Al2O3/SO4, was characterized using FTIR, XRD, XRF, and BET methods. The esterification reactions were conducted using dimethyl sulfoxide (DMSO) solvent at a temperature of 1000C and observed after they lasted for 1 to 24 hours (reaction time). The esterification of p-hydroxybenzoic acid with glucose used two catalysts, namely 3% SO42-/Al2O3 and 5% SO42-/Al2O3. The reaction products were analyzed using FTIR, HPLC, nd LC-MS methods. The % yield was the highest at Hour 24 for both catalysts, while the % conversion fluctuated during the esterification time. The LC-MS showed that the three produced esters had molecular weights of 300, 420, and 540.
publisher: Pharmaciana
full_text_status: public
publication: Esterification of p-hydroxybenzoic acid with glucose using a γ-Al2O3/SO4 catalyst
refereed: TRUE
issn: 2477 0256
citation:   Elfia Siska Yasa Putri, Elfia dan Widajanti Wibowo, Widajanti dan Soleh Kosela, Soleh   Esterification of p-hydroxybenzoic acid with glucose using a γ-Al2O3/SO4 catalyst.  Esterification of p-hydroxybenzoic acid with glucose using a γ-Al2O3/SO4 catalyst.   ISSN 2477 0256     
document_url: http://repository.uhamka.ac.id/id/eprint/765/1/181-455-1-PB.pdf