Abstract: Processes for producing the monohydrate form of magnesium ammonium phosphate in slurry from use of environmentally friendly reactants are described. Slurry containing the monohydrate form of magnesium ammonium phosphate can be fed directly to, and mixed with, paper making feedstock, such as feedstock for cigarette paper, without transformation of the monohydrate form to the hexahydrate form of magnesium ammonium phosphate.

Abstract: Filters, smoking articles, and methods for selectively removing one or more selected constituents from mainstream smoke are provided. The filters comprise zeolite BETA. Methods for making cigarette filters and smoking articles, as well as methods for smoking a cigarette, are also provided.

Abstract: A cigarette filter containing a mesoporous aluminosilicate molecular sieve modified by an aminoalkylsilyl group. The modified molecular sieve reacts with selected components of cigarette smoke to remove or reduce the concentration of the components without adversely affecting desirable flavor constituents of the smoke. The modified molecular sieve preferably is a zeolite such as SBA-15, MCM-41 or MCM-48 modified by 3-aminopropylsilyl groups. The modified molecular sieve may be incorporated into the filter by inclusion into a space therein or into one or more of the filter elements or into a fibrous component.

Abstract: Smoking articles, filters, and methods for selectively removing selected components from tobacco smoke are disclosed. The smoking articles and filters include composites composed of a porous alumina and/or aluminosilicate matrix containing particles of activated carbon and zeolite molecular sieve adsorbents distributed throughout the matrix which can selectively remove selected components of tobacco smoke. The composites may be made by admixing the adsorbent mixture and a binder such as aluminum hydroxide or montmorillonite clay, adding an aqueous mineral acid to gel the mixture and drying and firing the gel paste. The proportions and adsorption capacities of the components can be selected to tailor the adsorption characteristics of the composites to selectively remove targeted constituents such as acrolein and 1,3-butadiene in tobacco smoke. Methods for making filters and smoking articles using the composites, as well as methods for smoking products comprising the composites, are also provided.

Abstract: Smoking articles which involve the use of amphiphile-modified sorbents are disclosed. The amphiphile-modified sorbent has at least one amphiphilic compound bound to an inorganic molecular sieve substrate. The amphiphile-modified sorbent selectively removes certain constituents from cigarette smoke, while maintaining other constituents, such as those that contribute to flavor. Methods for making cigarette filters and smoking articles using amphiphile-modified sorbents, as well as methods for smoking a cigarette containing an amphiphile-modified sorbent, are also provided.

Abstract: Smoking articles which involve the use of a copper-exchanged molecular sieve catalyst that is capable of removing NO and/or NO2 from mainstream smoke are provided. The copper-exchanged molecular sieve catalyst comprises a microporous molecular sieve substrate having pores with an average diameter of from about 3 ? to about 15 ?, where at least some of the pores of the microporous molecular sieve substrate contain Cu+2 ions. Methods for making cigarette filters and smoking articles using the copper-exchanged molecular sieve catalyst, as well as methods for smoking a cigarette comprising the copper-exchanged molecular sieve catalyst, are also provided.

Abstract: Cut filler compositions, cigarettes, methods for making cigarettes and methods for smoking cigarettes are provided, which involve the use of a composite mesoporous/microporous material. The composite material is capable of removing at least one constituent from tobacco smoke, preferably selectively. The composite material may also be used for removing at least one constituent from tobacco smoke through sorption and/or catalysis. The composite material comprises channels interconnecting at least one mesoporous region and at least one microporous region. The mesopores of the composite material may further comprise a carbon lining and/or be further functionalized with a surfactant. Alternatively, the composite material may further comprise a metal, a metal oxide, or mixtures thereof.

Abstract: Smoking articles and filters, which involve the use of carbon-coated molecular sieve sorbents are provided. The carbon-coated molecular sieve sorbent has a carbon coating within pores of a mesoporous molecular sieve. The carbon-coated molecular sieve sorbent provides selective adsorption of one or more constituents from mainstream smoke, such as acrolein or 1,3-butadiene. Thus, certain constituents from cigarette smoke will be selectively removed, while maintaining other constituents, such as those that contribute to flavor. Methods for making cigarette filters and smoking articles using the carbon-coated molecular sieve sorbent, as well as methods for smoking a cigarette comprising the carbon-coated molecular sieve sorbent, are also provided.

Abstract: Smoking articles which use thiol-functionalized sorbents are provided. The thiol-functionalized sorbents comprise at least one thioalkylsilyl compound covalently bound to an inorganic molecular sieve substrate, where the thiol-functionalized sorbent is capable of removing at least one heavy metal constituent of mainstream smoke. The thiol-functionalized sorbents are particularly useful for the removal of mercury and/or cadmium from mainstream smoke. Methods for making cigarette filters and smoking articles using the thiol-functionalized sorbent, as well as methods for smoking a cigarette comprising the thiol-functionalized sorbent, are also provided.

Abstract: Smoke constituent reduction may be achieved by resolving from puff-to-puff analysis at which location along a tobacco rod production of a particular smoke constituent is maximized, and locally applying an attenuator at such resolved location to reduce production of the constituent. The remainder of the rod is left untreated so as to minimize impact on taste and burn characteristics of the cigarette. The attenuator material may be applied to the cigarette paper using a moving orifice device to create bands of such materials on the cigarette paper at predetermined locations along the tobacco rod.

Abstract: A smoking article composition and a method of making a smoking article composition comprising tobacco cut filler, cigarette paper and/or cigarette filter material further comprising a catalyst capable of converting carbon monoxide to carbon dioxide, wherein the catalyst comprises nanoscale catalyst particles dispersed within a porous aluminosilicate matrix. The catalyst can be formed by combining nanoscale catalyst particles or a metal precursor solution thereof with an alumina-silica sol mixture to form a slurry, gelling the slurry to form the co-gel, heating the co-gel to form a catalyst comprising nanoscale catalyst particles dispersed within a porous aluminosilicate matrix. The catalyst can be incorporated in tobacco cut filler, cigarette paper and/or cigarette filter material by spraying, dusting and/or immersion.

Abstract: A cigarette includes an ignition element in contact with tobacco, surrounded by a composite outer wrapper. The outer wrapper is impervious to oxygen causing the tobacco to extinguish between puffs. The ignition element, however, has a longer static burn time than the tobacco and remains smoldering between puffs. Upon a subsequent puff, the smoldering ignition element re-ignites the tobacco. One or more initially-occluded perforations in the outer layer maintain the uniformity in combustion of the tobacco and ignition element.

Abstract: A filter includes at least two monolithic sorbent segments and a mixing segment between the two monolithic sorbent segments. The monolithic sorbent segments comprise porous sorbent materials that are capable of selectively removing one or more selected gaseous constituents from a gas flow. The filter can be incorporated in a smoking article, such as a cigarette, to remove one or more selected constituents from mainstream smoke. Methods for making the filter and smoking articles including the filter, as well as methods for smoking a cigarette comprising the filter, are also provided.

Abstract: An activated carbon-containing sorbent is capable of selectively removing one or more selected gaseous components from a gas. The activated carbon-containing sorbent can be incorporated in a smoking article to remove one or more selected components from mainstream smoke. The activated carbon-containing sorbent can be a composite including one or more molecular sieve materials. Methods of making the activated carbon-containing sorbent, cigarette filters and smoking articles including the activated carbon-containing sorbent, as well as methods for smoking a cigarette comprising the activated carbon-containing sorbent, are provided.

Abstract: A cigarette filter for removing gas phase constituents from mainstream cigarette smoke as the smoke is drawn through the filter primarily comprises an activated carbon fiber filter section including a bundle of activated carbon fibers. Particulate adsorbent materials such as granules, beads or course powders may be dispersed amongst the activated carbon fibers to aid in removal of the gas phase constituents. Additionally, the activated carbon fiber filter section may be used in combination with a separate bed or beds of particulate adsorbent material. In one embodiment, the activated carbon fibers are positioned within a helical groove on the outside of a threaded rod within the activated carbon fiber filter section. Relatively smaller amounts of activated carbon fibers produce the same smoke constituent reduction as larger amounts of particulate adsorbent material.

Abstract: An electrical smoking system comprising a cigarette and an electric lighter, wherein the cigarette comprises a wrapper surrounding a tubular tobacco mat partially filled with material tobacco so as to define a filled tobacco rod portion and an unfilled tobacco rod portion. The wrapper includes an ammonium containing compound filler therein effective to reduce gaseous components of the tobacco smoke produced during smoking of the cigarette. The system includes a lighter comprising at least one heating blade and a controller adapted to control heating of the heater blade, the lighter arranged to at least partially receive the cigarette such that the heater blade heats a heating zone of the cigarette.

Abstract: A smoking article such as a cigarette comprises a tobacco rod and a filter component having a cavity filled with spherical beaded carbon. As mainstream tobacco smoke is drawn through the filter component, targeted gas phase smoke constituents are removed as the smoke passes through the carbon. During the filter manufacturing process the spherical beaded carbon flows like a liquid and substantially completely fills the cavity. Point-to-point contact between the spherical beads together with substantially complete filling of the cavity produces minimal channeling of ambulatory gas phase as well as maximum contact between the gas phase and the carbon surface of the spherical beads during smoking.

Abstract: An electrical smoking system comprising a cigarette and an electric lighter, wherein the cigarette comprises a wrapper surrounding a tubular tobacco mat partially filled with material tobacco so as to define a filled tobacco rod portion and an unfilled tobacco rod portion. The wrapper includes an ammonium containing compound filler therein effective to reduce gaseous components of the tobacco smoke produced during smoking of the cigarette. The system includes a lighter comprising at least one heating blade and a controller adapted to control heating of the heater blade, the lighter arranged to at least partially receive the cigarette such that the heater blade heats a heating zone of the cigarette.

Abstract: A fluid vaporizing device such as an aerosol generator having a tubular heater in the form of thin film of resistance heating material lining a fluid passage and method for forming the tubular heater within the fluid passage. The tubular heater can be heated to volatilize a fluid within the passage. The fluid vaporizing device can be used for the generation of aerosols containing medicated material.

Abstract: A cigarette includes an ignition element in contact with tobacco, surrounded by a composite outer wrapper. The outer wrapper is impervious to oxygen causing the tobacco to extinguish between puffs. The ignition element, however, has a longer static burn time than the tobacco and remains smoldering between puffs. Upon a subsequent puff, the smoldering ignition element re-ignites the tobacco. One or more initially-occluded perforations in the outer layer maintain the uniformity in combustion of the tobacco and ignition element.