当前位置：
X-MOL 学术
›
ACS Sustain. Chem. Eng.
›
论文详情
Our official English website, www.x-mol.net, welcomes your
feedback! (Note: you will need to create a separate account there.)
Fabrication of Hierarchical Sn-Beta Zeolite as Efficient Catalyst for Conversion of Cellulosic Sugar to Methyl Lactate
ACS Sustainable Chemistry & Engineering ( IF 7.1 ) Pub Date : 2020-02-26 , DOI: 10.1021/acssuschemeng.9b07061
Bo Tang 1 , Shuang Li 1 , Wei-Chao Song 1 , En-Cui Yang 1 , Xiao-Jun Zhao 1 , Naijia Guan 2 , Landong Li 2
ACS Sustainable Chemistry & Engineering ( IF 7.1 ) Pub Date : 2020-02-26 , DOI: 10.1021/acssuschemeng.9b07061
Bo Tang 1 , Shuang Li 1 , Wei-Chao Song 1 , En-Cui Yang 1 , Xiao-Jun Zhao 1 , Naijia Guan 2 , Landong Li 2
Affiliation
|
In this work, BEA-type hierarchically structured stannosilicate zeolite Sn-Beta-H was developed, which involved alkali-induced degradation of all-silica Beta (Si-Beta) and self-assembly of the resultant Si-Beta fragments with SnCl2·2H2O in the hydrothermal condition templated with tetraethylammonium hydroxide (TEAOH) and polydiallydimethylammonium chloride (PDADMAC). The synthesized Sn-Beta-H zeolite was comprehensively characterized by means of XRD, N2 physisorption, TEM, UV–vis, XPS, TG, DRIFT, and FTIR spectroscopy with pyridine and deuterated acetonitrile adsorption. The Lewis acidity related to isolated tetrahedrally coordinated Sn species in the hierarchical porous Beta framework was revealed, which existed in the form of partially hydrolyzed and framework-integrated species. The Sn-Beta-H zeolite worked efficiently in the catalytic transformation of a series of carbohydrates into methyl lactate, outperforming the microporous Sn-Beta and postsynthesized mesoporous meso-Sn-Beta counterparts. The influence parameters such as mesoporosity, hydrophilicity/hydrophobicity, and Lewis acidity on the glucose conversion were studied in detail.
中文翻译：
制备高效率的Sn-β沸石分子筛，以将纤维素糖转化为乳酸甲酯
在这项工作中，开发了BEA型分层结构的锡硅酸盐沸石Sn-Beta-H，它涉及碱诱导的全二氧化硅Beta（Si-Beta）降解以及所得的Si-Beta片段与SnCl 2 ·的自组装。2H 2 Ó与氢氧化四乙铵（TEAOH）和polydiallydimethylammonium酰氯（PDADMAC）模板水热条件。利用XRD，N 2对合成的Sn-B-H分子筛进行了全面表征。吡啶和氘代乙腈的物理吸附，TEM，UV-vis，XPS，TG，DRIFT和FTIR光谱。揭示了在分级多孔Beta骨架中与分离的四面体配位Sn物种相关的Lewis酸度，其以部分水解和骨架整合的物种形式存在。Sn-Beta-H沸石可有效地将一系列碳水化合物催化转化为乳酸甲酯，其性能优于微孔Sn-Beta和后合成的介孔Meso-Sn-Beta对应物。详细研究了介孔率，亲水性/疏水性和路易斯酸度等参数对葡萄糖转化率的影响。
更新日期：2020-02-26
中文翻译：
制备高效率的Sn-β沸石分子筛，以将纤维素糖转化为乳酸甲酯
在这项工作中，开发了BEA型分层结构的锡硅酸盐沸石Sn-Beta-H，它涉及碱诱导的全二氧化硅Beta（Si-Beta）降解以及所得的Si-Beta片段与SnCl 2 ·的自组装。2H 2 Ó与氢氧化四乙铵（TEAOH）和polydiallydimethylammonium酰氯（PDADMAC）模板水热条件。利用XRD，N 2对合成的Sn-B-H分子筛进行了全面表征。吡啶和氘代乙腈的物理吸附，TEM，UV-vis，XPS，TG，DRIFT和FTIR光谱。揭示了在分级多孔Beta骨架中与分离的四面体配位Sn物种相关的Lewis酸度，其以部分水解和骨架整合的物种形式存在。Sn-Beta-H沸石可有效地将一系列碳水化合物催化转化为乳酸甲酯，其性能优于微孔Sn-Beta和后合成的介孔Meso-Sn-Beta对应物。详细研究了介孔率，亲水性/疏水性和路易斯酸度等参数对葡萄糖转化率的影响。
京公网安备 11010802027423号