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| 1 | Ti-Si composite oxide-supported cobalt catalysts for CO_2 hydrogenation显示文摘In the present work, different silica-based supported cobalt (Co) catalysts were synthesized and used for CO2 hydrogenation for methanation. Different supports, such as SSP, MCM-41, TiSSP and TiMCM were used to prepare Co catalysts with 20 wt% Co loading. The supports and catalysts were characterized by means of N2 physisorption, XRD, SEM/EDX, XPS, TPR and CO chemisorption. It is found that after calcination of catalysts, Ti is present in the form of anatase. The introduction of Ti plays important roles in the properties of Co catalysts by:(i) facilitating the reduction of Co oxides species which are strongly interacted with support, (ii) preventing the formation of silicate compounds, and (iii) inhibiting the RWGS reaction. Based on CO2 hydrogenation, the CoTiMCM catalyst exhibites the highest activity and stability. | Jakrapan Janlamool Piyasan Praserthdam Bunjerd Jongsomjit | 2011 | Journal of Natural Gas Chemistry2011，20，5： | 4 |
| 2 | Cleaner gasoline production by using glycerol as fuel extender显示文摘 | Worapon Kiatkittipong Sirima Suwanmanee Navadol Laosiripojana Piyasan Praserthdam Suttichai Assabumrungrat | 2009 | Fuel Processing Technology2009，，5： | 1 |
| 3 | NaOH改性WO_3/SiO_2催化剂催化2-丁烯和乙烯复分解制丙烯(英文)显示文摘A WO3 /SiO2 catalyst is used in industry to produce propylene from 2-butene and ethylene metathe-sis. Catalysts with various WO3 loading(4% to 10%) were prepared by impregnation and tested for the metathesis of ethene and trans-2-butene. Ion exchange of NaOH onto the WO3/SiO2 catalyst was used to mitigate the acidity of the catalysts in a controlled way. At low WO3 loading, the treatment with large amounts of NaOH resulted in a significant decrease in metathesis activity concomitant with significant W leaching and marked structural changes(XRD, Raman). At higher WO3 loading (6% to 10%), the treatment with NaOH mainly resulted in a decrease in acidity. FT-IR experiments after adsorption of pyridine showed that the Lewis acidic sites were poisoned by sodium. Never-theless, the metathesis activity remained constant after the NaOH treatment. This suggested that the remaining acidity on the catalyst was enough to ensure the efficient formation of the carbene active sites. Interestingly, Na poisoning resulted in some modification of the selectivity. The mitigation of acidity was shown to favor propene selectivity over the formation of isomerization products (cis-2-butene, 1-butene, etc.). Moreover, treatment with NaOH led to a shorter induction period and reduced coke formation on the WO3 /SiO2 catalyst. | Surasa Maksasithorn Damien P. Debecker Piyasan Praserthdam Joongjai Panpranot Kong- kiat Suriye Sirachaya Kunjara Na Ayudhya | 2014 | 催化学报2014，35，2： | 1 |
| 4 | Ag-ZnO catalysts for UV-photodegradation of methylene blue显示文摘 | Murray J. Height Sotiris E. Pratsinis Okorn Mekasuwandumrong Piyasan Praserthdam | 2005 | Applied Catalysis B, Environmental2005，，： | 1 |
| 5 | Performance of Pd on nanocrystalline α- Al2O3 in selective hydrogenation of acetylene 显示文摘 | Nitikon Wongwaranon Okorn Mekasuwandumrong Piyasan Praserthdam | 2008 | Catalysis Today2008，131，： | 1 |
| 6 | Self-Etherification Process for Cleaner Fuel Production显示文摘 | Worapon Kiatkittipong Khamron Yoothongkham Choowong Chaisuk Piyasan Praserthdam Shigeo Goto Suttichai Assabumrungrat | 2009 | Catalysis Letters (-)2009，，1： | 1 |
| 7 | Some aspects about the nature of surface species on Pt-based and MFI-based catalysts for the selective catalytic reduction of NO by propene under lean-burn condition显示文摘 | Piyasan Praserthdam Choowong Chaisuk | 2002 | Applied Catalysis B: Environmental2002，38，： | 1 |
| 8 | Improvement of Pd/Al 2 O 3 catalyst performance in selective acetylene hydrogenation using mixed phases Al 2 O 3 support显示文摘 | Sataporn Komhom Okorn Mekasuwandumrong Piyasan Praserthdam Joongjai Panpranot | 2008 | Catalysis Communications2008，，1： | 1 |
| 9 | Cu/Mg-Al水滑石催化剂用于乙醇的氧化脱氢:乙醇浓度和还原条件的影响显示文摘目的:对现有的乙醇氧化脱氢体系中Mg-Al催化剂进行改进,以期获得更高的收率和产物选择性。创新点:1.制备Cu改性的Mg-Al催化剂用于乙醇氧化脱氢反应,获得了更高的乙醛收率和选择性;2.Cu/Mg-Al催化剂制备方法简单,制备价格低廉(无需贵金属),制备条件温和(无需高温高压);3.Cu/Mg-Al催化剂在使用前无需预还原。方法:1.采用共沉淀法和浸渍法制备Cu/Mg-Al催化剂;2.通过乙醇氧化脱氢反应对催化剂进行考评,以探究Cu改性、乙醇浓度和催化剂的还原条件对催化活性的影响。结论:1.与Mg-Al催化剂相比,经由Cu改性的Mg-Al催化剂的乙醇氧化脱氢活性显著提高;在350℃,乙醛最大收率为41.8%。2.进料气中水的存在(乙醇浓度下降)会对Cu/Mg-Al的催化性能产生不利影响,使得乙醇转化率和乙醛收率下降;但在高温区间(350~400℃),这个不利影响有所减弱。3.反应前,催化剂在氢气气氛下的还原步骤对Cu/Mg-Al催化活性的影响不明显。 | Piriya PINTHONG Piyasan PRASERTHDAM Bunjerd JONGSOMJIT | 2020 | Journal of Zhejiang University-Science A(Applied Physics & Engineering)2020，21，3： | 1 |
| 10 | Performance of Pd on nanocrystalline α-Al2O3 in selective hydrogenation of acetylene显示文摘 | Nitikon Wongwaranon Okorn Mekasuwandumrong Piyasan Praserthdam | 2008 | Catalysis Today2008，131，： | 1 |
| 11 | 显示文摘 | Suphot Phatanasri Piyasan Praserthdam Sipira Kularbkeaw | 2000 | React Kinet Catal Lett2000，71，2： | 1 |
| 12 | Role of support nature (γ-Al_2O_3 and SiO_2-Al_2O_3) on the performances of rhenium oxide catalysts in the metathesis of ethylene and 2-pentene显示文摘The metathesis of ethylene and 2-pentene was studied as an alternative route for propylene production over Re2O7/γ-Al2O3 and Re2O7/SiO2-Al2O3 catalysts. Both NH3 temperature-programmed desorption (NH3-TPD) and H2 temperature-programmed reduction (H2-TPR) results showed that Re2O7/SiO2-Al2O3 exhibited stronger acidity and weaker metal-support interaction than Re2O7/γ-Al2O3. At 35 60℃, isomerization free metathesis was observed only over Re2O7/γ-Al2O3, suggesting that the formation of metal-carbene metathesis active sites required only weak acidity. Our results suggest that on the Re2O7/SiO2-Al2O3, hydrido-rhenium species ([Re]-H) were formed in addition to the metathesis active sites, resulting in the isomerization of the initial 1-butene product into 2-butenes. A subsequent secondary metathesis reaction between these 2-butenes and the excess ethylene could explain the enhanced yields of propylene observed. The results demonstrate the potential for high yield of propylene from alternative feedstocks. | Weena Phongsawat Benjamas Netiworaruksa Kongkiat Suriye Siraprapha Dokjampa Piyasan Praserthdam Joongjai Panpranot | 2012 | Journal of Natural Gas Chemistry2012，21，2： | 1 |
| 13 | Activation of acetylene selective hydrogenation catalysts using oxygen containing compounds显示文摘 | Piyasan Praserthdam Suphot Phatanasri Jumpod Meksikarin | 2000 | Catal Today2000，63，24： | 1 |
| 14 | Oxygen transport through LSM/YSZ/LaAlO system for use of fuel cell type reactor显示文摘 | Worpon Kiatkittipong Tomohiko Tagawa Shigeo Goto Suttichai Assabumrungrat Piyasan Praserthdam | 2005 | Chemical Engineering Journal2005，106，： | 1 |
| 15 | Some aspects about the nature of surface species on Pt-based and MFI-based catalysts for the selective catalytic reduction of NO by propene under leanburn condition 显示文摘 | Praserthdam Piyasan | 2002 | Applied Catalysis B: Environmental2002，38，： | 1 |
| 16 | Dehydration of methanol to dimethyl ether over nanocrystalline Al2O3 with mixed γ-and x-crystalline phases显示文摘 | Khom-in Jutharat Praserthdam Piyasan Panpranot Joong- jai | 2008 | Catalysis Communications2008，9，10： | 1 |
| 17 | Investigation of isosynthesis via CO hydrogenation over ZrO 2 and CeO 2 catalysts: Effects of crystallite size, phase composition and acid–base sites显示文摘 | Watcharapong Khaodee Bunjerd Jongsomjit Suttichai Assabumrungrat Piyasan Praserthdam Shigeo Goto | 2006 | Catalysis Communications2006，，3： | 1 |
| 18 | Influence of synthesis conditions on the preparation of zirconia powder by the glycothermal method 显示文摘 | Sirarat Kongwudthiti Piyasan Praserthdam Peter Silveston Masashi Inoue | 2003 | Ceramics International2003，29，： | 1 |
| 19 | Modification of acid properties and catalytic properties of AlPO 4 by hydrothermal pretreatment for methanol dehydration to dimethyl ether显示文摘 | Krit Lertjiamratn Piyasan Praserthdam Masahiko Arai Joongjai Panpranot | 2010 | Applied Catalysis A General2010，，1： | 1 |
| 20 | Synergistic Effects of the ZnCl_2-SiCl_4 Modified TiCl_4/MgCl_2/THF Catalytic System on Ethylene/1-Hexene and Ethylene/1-Octene Copolymerizations显示文摘The copolymerizations of ethylene with 1-hexene or 1-octene by using TiCl4 /MgCl2 /THF catalysts modified with different metal halide additives(ZnCl2, SiCl4, and the combined ZnCl2-SiCl4) were investigated based on catalytic activity and copolymer properties. It was found that the catalyst modified with mixed ZnCl2-SiCl4 revealed the highest activities for both ethylene/1-hexene and ethylene/1-octene copolymerization. The increase in activities was due to the formation of acidic sites by modifying the catalysts with Lewis acids. Based on the FTIR measurements, the characteristic C―O―C peaks of the catalysts modified with metal halide additives were slightly shifted to lower wavenumber when compared to the unmodified catalyst. This showed that the modified catalysts could generate more acid sites in the TiCl4 /MgCl2 /THF catalytic system leading to an increase in activities as well as comonomer insertion(as proven by13C-NMR). However, Lewis acidmodifications did not affect the microstructure of the copolymers obtained. By comparison on the properties of copolymers prepared with the unmodified catalyst, it was found that polymers with ZnCl2 and/or SiCl4 modification exhibited a slight decrease in melting temperature, crystallinity and density. It is suggested that these results were obtained based on the different amount of α-olefins insertion, regardless of the types of Lewis acids and comonomer. | Wanna Phiwkliang Bunjerd Jongsomjit Piyasan Praserthdam | 2014 | Chinese Journal of Polymer Science2014，32，1： | 1 |
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