Modified mesoporous silica supporting platinum catalyst for synthesis of agricultural synergist

doi:10.11949/j.issn.0438-1157.20160458

CIESC Journal ›› 2016, Vol. 67 ›› Issue (9): 3699-3706.DOI: 10.11949/j.issn.0438-1157.20160458

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Modified mesoporous silica supporting platinum catalyst for synthesis of agricultural synergist

XIE Huilin¹, ZHANG Weixin¹, ZHU Guiyou¹, HU Wenbin^1,2, LIAO Liewen¹, JIA Zhenyu¹, LIU Qihai¹

1 College of Chemistry and Chemical Engineering, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, Guangdong, China;
2 Huizhou Research Institute of Sun Yat-sen University, Huizhou 516081, Guangdong, China

Received:2016-04-08 Revised:2016-06-07 Online:2016-09-05 Published:2016-09-05
Supported by:
supported by the National Natural Science Foundation of China (21476272), the Project of Guangdong Provincial Science and Technology Department (2014A010105049, 2015A040404044), the Project of Guangdong Provincial Education Department (2013KJCX106),the Natural Science Foundation of Guangdong Province (2015A030313595), the Project of Guangdong Provincial Undergraduate Scientific Innovation Fund (pdjh2016b0251) and the Project of Graduate Scientific Innovation Fund of Zhongkai University of Agriculture and Engineering (KA151495001, KA151495002).

改性介孔硅负载铂催化合成农用增效剂

谢慧琳¹, 张蔚欣¹, 朱贵有¹, 胡文斌^1,2, 廖列文¹, 贾振宇¹, 刘其海¹

1 仲恺农业工程学院化学化工学院, 广东广州 510225;
2 中山大学惠州研究院, 广东惠州 516081

通讯作者: 胡文斌
基金资助:
国家自然科学基金项目（21476272）；广东省科技厅项目（2014A010105049，2015A040404044）；广东省教育厅资助项目（2013KJCX106）；广东省自然科学基金项目（2015A030313595）；广东大学生科技创新培育专项资金项目（pdjh2016b0251）；仲恺农业工程学院研究生科技创新基金资助项目（KA151495001，KA151495002）。

Abstract

Abstract:

Pt/CS-SiO₂ catalyst was prepared by impregnating platinum on chitosan modified mesoporous silica and characterized by Fourier Transform Infrared Spectroscopy (FTIR), nitrogen adsorption-desorption (BET), thermogravimetric analysis (TGA). Catalytic performance was evaluated in hydrosilylation of polyether and trisiloxane for synthesizing agricultural synergist. The experimental results showed that Pt was successfully incorporated on modified mesoporous silica at content of 0.85%. The new catalyst had excellent reusability, which still maintained high activity with greater than 90% of both conversion and selectivity after reused seven times. The optimal synthesis condition for agricultural synergist was a mixture of polyether and trisiloxane at a molar ratio of 1:1.1 and 105℃ for 3 h. The agricultural synergist exhibited excellent stability in neutral aqueous solution by hydrolysis assessment at various pH conditions.

Key words: catalysis, silica, chitosan, synthesis, agricultural synergist

摘要：

通过壳聚糖（CS）改性介孔二氧化硅，并负载铂得到Pt/CS-SiO₂催化剂，采用红外光谱（FTIR）、氮气吸附脱附（BET）、热重分析（TG）等对催化剂进行表征，同时考察了Pt/CS-SiO₂催化聚醚和三硅氧烷反应合成农用增效剂。结果表明：Pt成功负载在改性介孔硅上，Pt含量为0.85%；催化剂具有良好的重复使用性，使用7次后仍有较高活性，转化率和选择性均在90%以上；合成农用增效剂的最优工艺为n（MD^HM）：n（HDE）=1：1.1，反应温度为105℃，反应时间为3 h。测试产物在不同pH的水溶液中的水解性能，发现其在中性条件下可以比较稳定地存在。

关键词: 催化, 二氧化硅, 壳聚糖, 合成, 农用增效剂

CLC Number:

TQ630.4

XIE Huilin, ZHANG Weixin, ZHU Guiyou, HU Wenbin, LIAO Liewen, JIA Zhenyu, LIU Qihai. Modified mesoporous silica supporting platinum catalyst for synthesis of agricultural synergist[J]. CIESC Journal, 2016, 67(9): 3699-3706.

谢慧琳, 张蔚欣, 朱贵有, 胡文斌, 廖列文, 贾振宇, 刘其海. 改性介孔硅负载铂催化合成农用增效剂[J]. 化工学报, 2016, 67(9): 3699-3706.

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Modified mesoporous silica supporting platinum catalyst for synthesis of agricultural synergist

改性介孔硅负载铂催化合成农用增效剂

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