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固定化Sn/氯化胆硷络合物制备Sn-β分子筛催化剂用于葡萄糖-果糖异构化反应(英文) 被引量:1
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作者 asep bayu Surachai Karnjanakom +2 位作者 Katsuki Kusakabe Abuliti Abudula Guoqing Guan 《Chinese Journal of Catalysis》 SCIE EI CAS CSCD 北大核心 2017年第3期426-433,共8页
在水溶液中锡盐与β分子筛金属化过程中很容易水解为氢氧化物,因此,制备高度分散的、以孤立形式存在的锡物种非常具有挑战性.我们先采用SnCl_2/氯化胆硷(ChCl)络合物将锡物种固定在高硅的商品化的β分子筛上,然后焙烧就可很方便地在水... 在水溶液中锡盐与β分子筛金属化过程中很容易水解为氢氧化物,因此,制备高度分散的、以孤立形式存在的锡物种非常具有挑战性.我们先采用SnCl_2/氯化胆硷(ChCl)络合物将锡物种固定在高硅的商品化的β分子筛上,然后焙烧就可很方便地在水溶液条件下制得了高度分散于β分子筛上的锡物种.电镜照片、紫外-可见光光谱和X射线衍射结果证实了这一点.ChCl的存在促进了锡物种与分子筛的结合.担载(1-2)wt%Sn的β分子筛在葡萄糖-果糖异构化反应中表现出较高的催化活性和选择性. 展开更多
关键词 锡-β分子筛 固定化 氯化胆硷 葡萄糖 异构化 果糖
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Cembranoids of Soft Corals:Recent Updates and Their Biological Activities
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作者 Marsya Yonna Nurrachma Deamon Sakaraga +8 位作者 Ahmad Yogi Nugraha Siti Irma Rahmawati asep bayu Linda Sukmarini Akhirta Atikana Anggia Prasetyoputri Fauzia Izzati Mega Ferdina Warsito Masteria Yunovilsa Putra 《Natural Products and Bioprospecting》 CAS 2021年第3期243-306,共64页
Soft corals are well-known as excellent sources of marine-derived natural products.Among them,members of the genera Sar-cophyton,Sinularia,and Lobophytum are especially attractive targets for marine natural product re... Soft corals are well-known as excellent sources of marine-derived natural products.Among them,members of the genera Sar-cophyton,Sinularia,and Lobophytum are especially attractive targets for marine natural product research.In this review,we reported the marine-derived natural products called cembranoids isolated from soft corals,including the genera Sarcophyton,Sinularia,and Lobophytum.Here,we reviewed 72 reports published between 2016 and 2020,comprising 360 compounds,of which 260 are new compounds and 100 are previously known compounds with newly recognized activities.The novelty of the organic molecules and their relevant biological activities,delivered by the year of publication,are presented.Among the genera presented in this report,Sarcophyton spp.produce the most cembranoid diterpenes;thus,they are considered as the most important soft corals for marine natural product research.Cembranoids display diverse biological activities,includ-ing anti-cancer,anti-bacterial,and anti-inflammatory.As cembranoids have been credited with a broad range of biological activities,they present a huge potential for the development of various drugs with potential health and ecological benefits. 展开更多
关键词 Cembranoids DITERPENE Soft corals Sarcophyton SINULARIA Lobophytum ANTI-BACTERIAL ANTI-CANCER ANTI-INFLAMMATORY
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Macroalgae-derived rare sugars: Applications and catalytic synthesis 被引量:1
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作者 asep bayu Mega F.Warsito +2 位作者 Masteria Y.Putra Surachai Karnjanakom Guoqing Guan 《Carbon Resources Conversion》 2021年第1期150-163,共14页
Rare sugars have attracted much attention since they are highly beneficial for health as alternative sweeteners and full of potential economic value in industry.The limited availability of rare sugars in nature has pr... Rare sugars have attracted much attention since they are highly beneficial for health as alternative sweeteners and full of potential economic value in industry.The limited availability of rare sugars in nature has promoted efforts on the conversion of sugars obtained from terrestrial plants into rare sugars,either via biological or chemo-catalytic approaches.However,the processes are generally complicated and consist of multiple steps.Macroalgae or seaweeds have been industrially used as a natural source of phycocolloids.These water-soluble polysaccharides contain monomeric sugars with unique chemical structures and are categorized as rare.In this review,the potency of macroalgae as a sustainable source of rare sugars and the recent progress on their catalytic conversion,either via biological or chemo-catalytical process,are summarized and discussed.Especially,the depolymerization of macroalgae for the production of rare sugars is presented.It is expected to enrich our knowledge in the development of sustainable production of rare sugars from macroalgae. 展开更多
关键词 Rare sugars Carbohydrates MACROALGAE Seaweeds PHYCOCOLLOIDS
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