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期刊论文 8

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亲合煅烧 1

亲合颗料 1

伴生物产品化 1

净化燃烧 1

固结脱硫 1

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Enhancing the adsorption function of biochar by mechanochemical graphitization for organic pollutant removal

《环境科学与工程前沿（英文）》 2021年 第15卷 第6期 doi: 10.1007/s11783-021-1418-2

摘要：

• Mechanochemical treatment reduced the calcination temperature for biochar synthesis.

关键词： Biochar     Mechanochemical treatment     Graphitization     Calcination temperature     Organic pollutant    

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WO3 nanomaterials synthesized via a sol-gel method and calcination for use as a CO gas sensor

Diah SUSANTI,A.A. Gede Pradnyana DIPUTRA,Lucky TANANTA,Hariyati PURWANINGSIH,George Endri KUSUMA,Chenhao WANG,Shaoju SHIH,Yingsheng HUANG

《化学科学与工程前沿（英文）》 2014年 第8卷 第2期   页码 179-187 doi: 10.1007/s11705-014-1431-0

摘要： Carbon monoxide is a poisonous and hazardous gas and sensitive sensor devices are needed to prevent humans from being poisoned by this gas. A CO gas sensor has been prepared from WO synthesized by a sol-gel method. The sensor chip was prepared by a spin-coating technique which deposited a thin film of WO on an alumina substrate. The chip samples were then calcined at 300, 400, 500 or 600 °C for 1 h. The sensitivities of the different sensor chips for CO gas were determined by comparing the changes in electrical resistance in the absence and presence of 50 ppm of CO gas at 200 °C. The WO calcined at 500 °C had the highest sensitivity. The sensitivity of this sensor was also measured at CO concentrations of 100 ppm and 200 ppm and at operating temperatures of 30 and 100 °C. Thermogravimetric analysis of the WO calcined at 500 °C indicated that this sample had the highest gas adsorption capacity. This preliminary research has shown that WO can serve as a CO gas sensor and that is should be further explored and developed.

关键词： WO3 nanomaterial     sol-gel     calcinations     CO gas sensor     sensitivity    

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Pd-Fe/α-Al

Shengping WANG, Xin ZHANG, Yujun ZHAO, Yadong GE, Jing LV, Baowei WANG, Xinbin MA

《化学科学与工程前沿（英文）》 2012年 第6卷 第3期   页码 259-269 doi: 10.1007/s11705-012-1212-6

摘要： Cordierite monoliths coated with Pd-Fe/α-Al O catalysts were prepared at various calcination temperatures and characterized by thermogravimetry, temperature-programmed reduction, transmission electron microscopy, diffuse reflectance infrared Fourier transformation spectroscopy and X-ray diffraction. The performance of the catalytic monoliths for the synthesis of dimethyl oxalate (DMO) through a CO coupling reaction was evaluated. Monolithic catalysts with calcination temperatures ranging from 473 K to 673 K exhibited excellent dispersion of Pd, good CO adsorption properties, and excellent performance for the coupling reaction. The optimized monolithic catalyst exhibited a much higher Pd efficiency (denoted as DMO (g)·Pd (g) ·h ) (733 h ) than that of the granular catalyst (60.2 h ), which can be attributed to its honeycomb structure and the large pore sizes in the α-Al O washcoat which was accompanied with an even distribution of the active component in the coating layer along the monoliths channels.

关键词： dimethyl oxalate     coupling     Pd     cordierite     monolith     calcination     structure    

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A study on the catalytic performance of Pd/γ-Al

Ruizhi CHU, Xianyong WEI, Zhimin ZONG, Wenjia ZHAO

《化学科学与工程前沿（英文）》 2010年 第4卷 第4期   页码 452-456 doi: 10.1007/s11705-010-0522-9

摘要： A series of Pd/γ-Al O hybrid catalysts were prepared by impregnation and subsequent calcination under microwave irradiation. The catalysts were used for direct synthesis of dimethylether (DME) from syngas. The results show that calcination under microwave irradiation improved both the activity and selectivity of the catalysts for DME synthesis. The optimum power of the microwave was determined to be 420 W. Under such optimum conditions, CO conversion, DME selectivity and time space yield of DME were 60.1%, 67.0%, and 21.5 mmol·mL ·h , respectively. Based on various characterizations such as nitrogen physisorption, X-ray diffraction, CO-temperature-programmed desorption, and Fourier transform infrared spectral analysis, the promotional effect of the microwave irradiation on the catalytic property was mainly attributed to both the higher dispersion of Pd and the significant increase in the adsorption on the CO-bridge of Pd. Microwave irradiation with very high power led to the increase in CO-bridge adsorption and thereby decreased the catalytic activity, whereas the coverage by metallic Pd of the active sites on acidic γ-Al O significantly occurred under microwave irradiation with very low power, resulting in a decrease in the selectivity to DME.

关键词： Pd/γ-Al2O3     direct synthesis     dimethyl ether     calcination under microwave irradiation    

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Preparation of ultrafine α-AlO using precipitation-azeotropic distillation method

XIAO Jin, QIN Qi, ZHOU Feng, CHEN Yanbin, WAN Ye

《机械工程前沿（英文）》 2008年 第3卷 第2期   页码 226-231 doi: 10.1007/s11465-008-0029-y

摘要： Ammonium aluminum carbonate hydroxide (AACH) was prepared by a precipitation-azeotropic distillation method, which uses aluminum sulfate as the Al source and ammonium carbonate as the precipitant. Then, AACH was calcined into ultrafine ?-AlO powder. The factors that influence the dispersion property of ultrafine ?-AlO powder are discussed in this paper, such as the methods of adding materials, surfactant, and drying methods. The changes of the structure and property of ultrafine alumina in the thermal treatment process are also studied. The morphological structure and properties of AACH are characterized by DTA/TGA, SEM, XRD, and ICP measurements. The results show that ultrafine ?-AlO powder with a uniform particle size and well-distributed property can be synthesized only after aluminum sulfate atomizes into ammonium carbonate, proper amount of PEG1000 is added as the dispersant, and the product is treated by azeotropic distillation. The phase transformation of alumina during the calcination process can be described as amorphous AlO → ?-AlO → ?-AlO → ?-AlO. The crystal grain size and density of ultrafine alumina powder increase with the increase of the calcination temperature. After AACH has been calcined at 1200°C for 2 h, the ultrafine ?-AlO with uniform particle size, spherical shape, and more than 99.97% purity is obtained and its powder is well dispersed.

关键词： calcination temperature     spherical     AACH     carbonate hydroxide     ammonium carbonate    

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Comparison of the morphology and structure of WO

Diah Susanti, Stefanus Haryo N, Hasnan Nisfu, Eko Prasetio Nugroho, Hariyati Purwaningsih, George Endri Kusuma, Shao-Ju Shih

《化学科学与工程前沿（英文）》 2012年 第6卷 第4期   页码 371-380 doi: 10.1007/s11705-012-1215-3

摘要： Tungsten (VI) oxide (WO ) nanomaterials were synthesized by a sol-gel method using WCl and C H OH as precursors followed by calcination or hydrothermal treatment. X-Ray diffraction (XRD), scanning electron microscopy (SEM) and high resolution transmission electron microscopy (HRTEM) equipped with energy dispersive X-ray spectroscopy (EDX) were used to characterize the structure and morphology of the materials. There were significant differences between the WO materials that were calcinated and those that were subjected to a hydrothermal process. The XRD results revealed that calcination temperatures of 300°C and 400°C gave hexagonal structures and temperatures of 500°C and 600°C gave monoclinic structures. The SEM images showed that an increase in calcination temperature led to a decrease in the WO powder particle size. The TEM analysis showed that several nanoparticles agglomerated to form bigger clusters. The hydrothermal process produced hexagonal structures for holding times of 12, 16, and 20 h and monoclinic structures for a holding time of 24 h. The SEM results showed transparent rectangular particles which according to the TEM results originated from the aggregation of several nanotubes.

关键词： WO3 nanomaterial     sol-gel method     calcination     hydrothermal    

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煤净化燃烧及伴生物产品化

朱雪芳

《中国工程科学》 1999年 第1卷 第1期   页码 53-57

摘要：

煤净化燃烧及伴生物产品化新工艺，是在电厂燃煤中加特制的掺烧剂共同粉磨产生亲合颗粒，喷入锅炉内进行亲合煅烧。保证供热发电的同时实现降低残炭、提高粉煤灰活性、固结脱硫、降低Nox、CO2，并将全部固态伴生物在具有速烧速冷的燃煤锅炉内直接生成优质水泥熟料；实现基本消除燃烧的全部污染（气体和固体污染），且不产生二次污染，从而达到清洁生产的目的。

关键词： 净化燃烧     伴生物产品化     速烧速冷     固结脱硫     亲合颗料     亲合煅烧    

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Low-temperature CO oxidation over Au-doped 13X-type zeolite catalysts: preparation and catalytic activity

Qing YE, Donghui LI, Jun ZHAO, Jiansheng ZHAO, Tianfang KANG, Shuiyuan CHENG

《环境科学与工程前沿（英文）》 2011年 第5卷 第4期   页码 497-504 doi: 10.1007/s11783-011-0256-z

摘要： Au-supported 13X-type zeolite (Au/13X) was synthesized using a common deposition–precipitation (DP) method with a solution of sodium carbonate as a precipitate agent. Further testing was conducted to test for catalytic oxidation of CO. A study was conducted on the effects of different preparation conditions (i.e., chloroauric acid concentration, solution temperature, pH of solution, and calcinations temperature) on Au/13X for CO oxidation. In respect to the catalytic activity, the relationship between different the preparation conditions and gold particles in 13X zeolite was analyzed using X-ray diffraction, TEM and XPS. The activity of Au/13X catalysts in CO oxidation was dependent on the chloroauric acid concentration. From XRD results, a higher chloroauric acid concentration induced larger gold nanoparticles, which resulted in lower catalytic activity. Results revealed that higher temperatures induced higher Au loading, homogeneous deposit, and smaller gold clusters on the support of 13X, resulting in higher CO activity. Furthermore, a pH of 5 or 6 generated greater amounts of Au loading and smaller Au particles on 13X than at a pH of 8 or 9. This may be a result of an effective exchange between and Au(OH) Cl on specific surface sites of zeolite under the pH’s 5 and 6. The sample calcined at 300°C showed the highest activity, which may be due to the sample’s calcined at 200°C inability to decompose completely to metallic gold while the sample calcined at 400°C had larger particles of gold deposited on the support. It can be concluded from this study that Au/13X prepared from a gold solution with an initial chloroauric acid solution concentration of 1.5 × 10 mol·L gold solution pH of 6, solution temperature of around 90°C, and a calcination temperature of 300°C provides optimum catalytic activity for CO oxidation.

关键词： 13X-type zeolite     CO oxidation     gold solution     pH     calcination temperature    

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标题 作者 时间 类型 操作

Enhancing the adsorption function of biochar by mechanochemical graphitization for organic pollutant removal

期刊论文

WO3 nanomaterials synthesized via a sol-gel method and calcination for use as a CO gas sensor

Diah SUSANTI,A.A. Gede Pradnyana DIPUTRA,Lucky TANANTA,Hariyati PURWANINGSIH,George Endri KUSUMA,Chenhao WANG,Shaoju SHIH,Yingsheng HUANG

期刊论文

Pd-Fe/α-Al

Shengping WANG, Xin ZHANG, Yujun ZHAO, Yadong GE, Jing LV, Baowei WANG, Xinbin MA

期刊论文

A study on the catalytic performance of Pd/γ-Al

Ruizhi CHU, Xianyong WEI, Zhimin ZONG, Wenjia ZHAO

期刊论文

Preparation of ultrafine α-AlO using precipitation-azeotropic distillation method

XIAO Jin, QIN Qi, ZHOU Feng, CHEN Yanbin, WAN Ye

期刊论文

Comparison of the morphology and structure of WO

Diah Susanti, Stefanus Haryo N, Hasnan Nisfu, Eko Prasetio Nugroho, Hariyati Purwaningsih, George Endri Kusuma, Shao-Ju Shih

期刊论文

煤净化燃烧及伴生物产品化

朱雪芳

期刊论文

Low-temperature CO oxidation over Au-doped 13X-type zeolite catalysts: preparation and catalytic activity

Qing YE, Donghui LI, Jun ZHAO, Jiansheng ZHAO, Tianfang KANG, Shuiyuan CHENG

期刊论文